Clang: Drop non-existent -fno-ansi-escape-codes flag
In !8900 (merged) we added the positive option -fansi-escape-codes
and the negative form of
the option, -fno-ansi-escape-codes
. According to the LLVM/Clang
documentation
only the positive form of the option exists.
Fixes: #26036 (closed)
Backport: release
Manual-backport: release-3.29
Manual-backport: release-3.28