Summary:
D42673 / 86dabd7a2d97599f76def061a5caf24a02d406da added `-ftime-trace` to Clang builds. This
flag is unsupported by ccache:
```
[2025-06-03T23:32:51.847864 2917992] Compiler option -ftime-trace is unsupported
...
[2025-06-03T23:32:51.847950 2917992] Result: unsupported_compiler_option
```
in ccache logs when `log_file` is added to `ccache.conf`. On older versions of ccache (verified 4.5.1),
it also cannot be added to `ignore_flags`. Removing this flag since it doesn't actually affect the build.
Jira: DB-17052

Test Plan:
Jenkins: compile only

Added `log_file` config to ccache.conf and verified logs + `ccache -s` output to ensure ccache is
caching C++ clang compile.

Reviewers: asrivastava

Reviewed By: asrivastava

Subscribers: yql, ybase

Differential Revision: https://phorge.dev.yugabyte.com/D44521