Merge bitcoin/bitcoin#32308: ci: Drop no longer necessary -Wno-error=array-bounds

e34f12b ci: Drop no longer necessary `-Wno-error=array-bounds` (Hennadii Stepanov)

Pull request description:

  The build log of the "Linux->Windows cross" CI job no longer shows any `-Warray-bounds` compiler warnings. Therefore, there's no need to suppress them with `-Wno-error=array-bounds`.

  I likely overlooked this when reviewing bitcoin/bitcoin#29881, as I can run that CI job locally without such warnings even at commit 785649f.

ACKs for top commit:
  TheCharlatan:
    ACK e34f12b

Tree-SHA512: ac66160866097538af6f196c0cb22d370427c59c071b0ddcb1a6717e233bbd3dfed4e090d266221c55ae0ddd3d5dffb0ca7ae01582eda07f25fb886a775b6ac5

Author: fanquake

ci/test/00_setup_env_win64.sh

@@ -15,4 +15,4 @@ export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false
 export GOAL="deploy"
 export BITCOIN_CONFIG="-DREDUCE_EXPORTS=ON -DBUILD_GUI_TESTS=OFF \
--DCMAKE_CXX_FLAGS='-Wno-error=maybe-uninitialized -Wno-error=array-bounds'"
+-DCMAKE_CXX_FLAGS='-Wno-error=maybe-uninitialized'"