Clean up dead code and dead tests

[RyeMutt]

Description

• Clean up dead legacy headers and compiler work arounds
• Clean up dead macos files
• Clean up dead windows build files
• Clean up dead partsyspacket code
• Clean up dead LLStreamQueue code and related tests
• Clean up dead LLBase32 code
• Clean up dead LLSphere code and related tests
• Clean up dead TeamCity build output and work arounds from tests
• Remove dead LLLooksHistoryPanel LLPanelIMControlPanel and LLToolView

Related Issues

• Please link to a relevant GitHub issue for additional context.
  • Bug Fix: Link to an issue that includes reproduction steps and testing guidance.
  • Feature/Enhancement: Link to an issue with a write-up, rationale, and requirements.

Issue Link:

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Checklist

Please ensure the following before requesting review:

• I have provided a clear title and detailed description for this pull request.
• If useful, I have included media such as screenshots and video to show off my changes.
• The PR is linked to a relevant issue with sufficient context.
• I have tested the changes locally and verified they work as intended.
• All new and existing tests pass.
• Code follows the project's style guidelines.
• Documentation has been updated if needed.
• Any dependent changes have been merged and published in downstream modules
• I have reviewed the contributing guidelines.

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Additional Notes

[Copilot]

Pull request overview

This PR removes obsolete code including legacy headers, platform-specific workarounds, and unused functionality that is no longer needed in the current codebase.

Key changes include:

• Removal of legacy TeamCity CI integration code and test workarounds
• Cleanup of macOS-specific build files and header workarounds
• Elimination of unused particle system packet serialization code
• Removal of dead utility classes (LLStreamQueue, LLBase32, LLSphere, LLToolView)

Reviewed changes

Copilot reviewed 50 out of 50 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
indra/test/test.cpp	Removed CTYPE_WORKAROUND and LLTCTestCallback for TeamCity integration
indra/newview/*.h/.cpp	Removed legacy macOS prefix headers and unused UI panels/tools
indra/llmessage/partsyspacket.*	Removed entire particle system packet serialization implementation
indra/llmath/llsphere.*	Removed LLSphere geometry utility class and tests
indra/llmath/*.h	Removed legacy wrapper headers (camera.h, coordframe.h, timer.h)
indra/llcommon/llstreamqueue.*	Removed LLStreamQueue buffer implementation and tests
indra/llcommon/llbase32.*	Removed base32 encoding utility
indra/llcommon/*.h	Removed workaround headers (fix_macros.h, ctype_workaround.h, mutex.h) and updated includes
indra/llcorehttp/tests/*.hpp	Removed TeamCity-specific test skip conditions
indra/llwindow/llwindowmacosx.h	Removed fix_macros.h include
indra/llfilesystem/lldiriterator.cpp	Removed fix_macros.h include
indra/newview/CMakeLists.txt	Removed references to deleted headers
indra/llmessage/CMakeLists.txt	Removed partsyspacket from build
indra/llmath/CMakeLists.txt	Removed llsphere and legacy headers from build
indra/llcommon/CMakeLists.txt	Removed deleted files from build and test configuration

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[RyeMutt]

Fixed the conflict.