RFR: 8354292: Remove unused PRAGMA_FORMAT_IGNORED

[simon]

On Wed, 30 Apr 2025 01:22:24 GMT, simon <duke at openjdk.org> wrote:

> The macro PRAGMA_FORMAT_IGNORED is defined in compilerWarnings_gcc.hpp, with default empty definition in compilerWarnings.hpp. It is unused and can be removed.

Sure! Let's wait Kim's review.

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PR Comment: https://git.openjdk.org/jdk/pull/24958#issuecomment-2841553672