RFR: 8324717: Remove HotSpotJVMCICompilerFactory

[Doug Simon]

On Thu, 25 Jan 2024 14:42:19 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

> There has been no active use of `jdk.vm.ci.hotspot.HotSpotJVMCICompilerFactory.CompilationLevelAdjustment` since [JDK-8219403](https://bugs.openjdk.org/browse/JDK-8219403) effectively [disabled](https://github.com/openjdk/jdk/commit/61f35bf898d6a0f4e7b6e514821b40efd87396dc#diff-4d3a3b7e7e12e1d5b4cf3e4677d9e0de5e9df3bbf1bbfa0d8d43d12098d67dc4R302-R306) it. Since `HotSpotJVMCICompilerFactory` exists solely for `CompilationLevelAdjustment` related logic, this PR removes the whole `HotSpotJVMCICompilerFactory` class.

Thanks for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/17570#issuecomment-1915383889