refactor(amazonq): deprecate codewhisperer context utils

[jpinkney-aws]

Problem

deprecation for inline

Solution

deprecates:

1. supplemental context + its tests, since that was only passed into codewhisperer
2. codewhisperer coverage tracker, since thats already in flare
3. classifier trigger, since that's in flare
4. inlineCompletionProvider is no longer used and should have been in my other PR
5. editorContext utils, since that was used with supplemental context

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