drop xtext web

[cdietrich]

docu pr: eclipse-xtext/xtext-website#123. xtext.docs needs to regenerated later

@szarnekow @LorenzoBettini @HannesWell i am quite sure i overlooked a billion places

[cdietrich]

to be checked

• org.eclipse.xtext.ide/src/org/eclipse/xtext/ide/editor/syntaxcoloring/IEditorHighlightingConfigurationProvider.java

[github-actions]

Test Results

  8 064 files   - 12    8 064 suites   - 12   3h 48m 0s ⏱️ - 10m 29s
 43 169 tests  - 72   42 585 ✅  - 72    584 💤 ±0  0 ❌ ±0 
212 388 runs   - 72  209 467 ✅  - 72  2 921 💤 ±0  0 ❌ ±0 

Results for commit 38b1052. ± Comparison against base commit b489a5f.

This pull request removes 72 tests.

org.eclipse.xtext.web.server.test.Bug489571Test ‑ testFormatFile
org.eclipse.xtext.web.server.test.Bug489571Test ‑ testFormatSelection
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCrossref
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCrossrefWithPrefix1
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCrossrefWithPrefix2
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCustomCrossref
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCustomTerminal
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testCustomTerminalWithPrefix
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testFqnCrossref
org.eclipse.xtext.web.server.test.ContentAssistTest ‑ testFqnCrossrefWithPrefix1
…

♻️ This comment has been updated with latest results.

[szarnekow]

Might be that I oversaw a few missing copyright updates. Other than that, no findings.