Fix #2761 #2769 #3125: Remove Bazel model library.

[fsharpasharp]

Explanation

Fix #2761
Fix #2769
Fix #3125

Subtitled_unicode_java_proto_lite seems to be indirectly exported by other libraries and was not added to any other library.

Checklist

• The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
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[BenHenning]

Thanks @fsharpasharp! LGTM.