Restore documentation search in Sphinx/ReadTheDocs

[lbianchi-lbl]

Resolves #909

Summary/Motivation:

Search doesn't work and we'd like it to work. See #909 (comment) for a before/after

Changes proposed in this PR:

• Remove JS files from the repo that were shadowing the ones provided by Sphinx/ReadTheDocs

Legal Acknowledgement

By contributing to this software project, I agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the license terms described in the LICENSE.txt file at the top level of this directory.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov]

Codecov Report

Merging #932 (f5c6660) into main (518cf5c) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head f5c6660 differs from pull request most recent head 719dbc8. Consider uploading reports for the commit 719dbc8 to get more accurate results

@@            Coverage Diff             @@
##             main     #932      +/-   ##
==========================================
- Coverage   70.07%   70.06%   -0.01%     
==========================================
  Files         573      573              
  Lines       64007    64007              
  Branches    12053    12053              
==========================================
- Hits        44850    44847       -3     
- Misses      16868    16872       +4     
+ Partials     2289     2288       -1     

Impacted Files	Coverage Δ
idaes/ver.py	61.53% <0.00%> (-4.62%)	⬇️

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[ksbeattie]

YES!

[andrewlee94]

Rubber stamp.