Remove a couple of unused constants from src/shared/util.js

[Snuffleupagus]

These constants were added "speculatively" in PR #10820, almost four years ago, but have never actually been used. We already have issue #10982 that tracks potentially extending support for the affected annotation-format, however until that happens I really don't think that we should keep shipping completely unused code in the PDF.js library.

For the MOZCENTRAL build-target, i.e. the Firefox PDF Viewer, this reduces the total bundle size by 1.1 kilo-byte.

[Snuffleupagus]

/botio test

[moz-tools-bot]

From: Bot.io (Linux m4)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/03010b2081725c4/output.txt

[moz-tools-bot]

From: Bot.io (Windows)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.193.163.58:8877/bf1afb477c6c793/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

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Failed

Full output at http://54.241.84.105:8877/03010b2081725c4/output.txt

Total script time: 24.78 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: Passed
• Regression tests: FAILED

  different ref/snapshot: 11
  different first/second rendering: 1

Image differences available at: http://54.241.84.105:8877/03010b2081725c4/reftest-analyzer.html#web=eq.log

[moz-tools-bot]

From: Bot.io (Windows)

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Failed

Full output at http://54.193.163.58:8877/bf1afb477c6c793/output.txt

Total script time: 38.01 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: FAILED
• Regression tests: FAILED

  different ref/snapshot: 27

Image differences available at: http://54.193.163.58:8877/bf1afb477c6c793/reftest-analyzer.html#web=eq.log

[timvandermeij]

I agree; they can easily be put back once that functionality is implemented. Thanks!