Remove the RubocopRailsAccessibility/LinkHasHref rule

[khiga8]

Context

The RubocopRailsAccessibility/LinkHasHref rule has been extended and still doesn't have support for various formats of link_to which are difficult to account for, for example:

<%= link_to XXXX do %>
  Text
<% end %>

for example:

<%= link_to network_dependabot_show_path(update_job_id: update_config.last_full_update_run.id) do %>
  Last checked <%= time_ago_in_words_js Time.at(update_config.last_full_update_run.finished_at.seconds) %>
<% end %>

This rule also does not seem high priority to fix now (also given it was brokenly implemented in dotcom to begin with).

This PR removes this rule for now and revisit this later.

Related issue

• Add support for other formats of link_to in the RailsAccessibility/LinkHasHref rule #3

[owenniblock]

Sad that we have to remove it, happy with the change 😅

[bolonio]

😢 Sad to remove it

[bolonio]

Remove it as well from the rules section in the README, please :)