Revert changes from calendar and numberingSystem options

This is a temporary revert commit for tc39#175 until a canonicalization for Unicode extensions are
added through ResolveLocale.

Ref tc39/proposal-intl-locale#96

This commit should be reverted along the proposed solution. Changes are simplified in this single commit to avoid reverting all the 7 original commits from tc39#175.

spec/datetimeformat.html

@@ -73,26 +73,12 @@ <h1>InitializeDateTimeFormat ( _dateTimeFormat_, _locales_, _options_ )</h1>
         The abstract operation InitializeDateTimeFormat accepts the arguments _dateTimeFormat_ (which must be an object), _locales_, and _options_. It initializes _dateTimeFormat_ as a DateTimeFormat object. This abstract operation functions as follows:
       </p>
 
-      <p>
-        The following algorithm refers to the `type` nonterminal from <a href="http://www.unicode.org/reports/tr35/#Unicode_locale_identifier">UTS 35's Unicode Locale Identifier grammar</a>.
-      </p>
-
       <emu-alg>
         1. Let _requestedLocales_ be ? CanonicalizeLocaleList(_locales_).
         1. Let _options_ be ? ToDateTimeOptions(_options_, *"any"*, *"date"*).
         1. Let _opt_ be a new Record.
         1. Let _matcher_ be ? GetOption(_options_, *"localeMatcher"*, *"string"*, &laquo; *"lookup"*, *"best fit"* &raquo;, *"best fit"*).
         1. Set _opt_.[[localeMatcher]] to _matcher_.
-        1. Let _calendar_ be ? GetOption(_options_, *"calendar"*, *"string"*, *undefined*, *undefined*).
-        1. If _calendar_ is not *undefined*, then
-          1. If _calendar_ does not match the Unicode Locale Identifier `type` nonterminal, throw a *RangeError* exception.
-          1. Set _calendar_ to the result of mapping _calendar_ to lower case as as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
-        1. Set _opt_.[[ca]] to _calendar_.
-        1. Let _numberingSystem_ be ? GetOption(_options_, *"numberingSystem"*, *"string"*, *undefined*, *undefined*).
-        1. If _numberingSystem_ is not *undefined*, then
-          1. If _numberingSystem_ does not match the Unicode Locale Identifier `type` nonterminal, throw a *RangeError* exception.
-          1. Set _numberingSystem_ to the result of mapping _numberingSystem_ to lower case as as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
-        1. Set _opt_.[[nu]] to _numberingSystem_.
         1. Let _hour12_ be ? GetOption(_options_, *"hour12"*, *"boolean"*, *undefined*, *undefined*).
         1. Let _hourCycle_ be ? GetOption(_options_, *"hourCycle"*, *"string"*, &laquo; *"h11"*, *"h12"*, *"h23"*, *"h24"* &raquo;, *undefined*).
         1. If _hour12_ is not *undefined*, then

spec/locales-currencies-tz.html

@@ -9,7 +9,7 @@ <h1>Identification of Locales, Currencies, Time Zones, and Measurement Units</h1
     <h1>Case Sensitivity and Case Mapping</h1>
 
     <p>
-      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters *"A"* to *"Z"* (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters *"a"* to *"z"* (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range *"a"* to *"z"* (U+0061 to U+007A) to the corresponding characters in the range *"A"* to *"Z"* (U+0041 to U+005A) and maps no other characters to the latter range. When mapping to lower case, a mapping shall be used that maps characters in the range *"A"* to *"Z"* (U+0041 to U+005A) to the corresponding characters in the range *"a"* to *"z"* (U+0061 to U+007A) and maps no other characters to the latter range.
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters *"A"* to *"Z"* (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters *"a"* to *"z"* (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range *"a"* to *"z"* (U+0061 to U+007A) to the corresponding characters in the range *"A"* to *"Z"* (U+0041 to U+005A) and maps no other characters to the latter range.
     </p>
 
     <p>

spec/numberformat.html

@@ -51,10 +51,6 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
         The abstract operation InitializeNumberFormat accepts the arguments _numberFormat_ (which must be an object), _locales_, and _options_. It initializes _numberFormat_ as a NumberFormat object. The following steps are taken:
       </p>
 
-      <p>
-        The following algorithm refers to the `type` nonterminal from <a href="http://www.unicode.org/reports/tr35/#Unicode_locale_identifier">UTS 35's Unicode Locale Identifier grammar</a>.
-      </p>
-
       <emu-alg>
         1. Let _requestedLocales_ be ? CanonicalizeLocaleList(_locales_).
         1. If _options_ is *undefined*, then
@@ -64,11 +60,6 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
         1. Let _opt_ be a new Record.
         1. Let _matcher_ be ? GetOption(_options_, *"localeMatcher"*, *"string"*, &laquo; *"lookup"*, *"best fit"* &raquo;, *"best fit"*).
         1. Set _opt_.[[localeMatcher]] to _matcher_.
-        1. Let _numberingSystem_ be ? GetOption(_options_, `"numberingSystem"`, `"string"`, *undefined*, *undefined*).
-        1. If _numberingSystem_ is not *undefined*, then
-          1. If _numberingSystem_ does not match the Unicode Locale Identifier `type` nonterminal, throw a *RangeError* exception.
-          1. Set _numberingSystem_ to the result of mapping _numberingSystem_ to lower case as as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
-        1. Set _opt_.[[nu]] to _numberingSystem_.
         1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
         1. Let _r_ be ResolveLocale(%NumberFormat%.[[AvailableLocales]], _requestedLocales_, _opt_, %NumberFormat%.[[RelevantExtensionKeys]], _localeData_).
         1. Set _numberFormat_.[[Locale]] to _r_.[[locale]].