delete mode 100644 lib/libc/mingw/math/arm/sincosf.S
 delete mode 100644 lib/libc/mingw/math/arm64/sincosf.S
 delete mode 100644 lib/libc/mingw/math/x86/cosf.c
 delete mode 100644 lib/libc/mingw/math/x86/cossin.c
 delete mode 100644 lib/libc/mingw/math/x86/sinf.c
 delete mode 100644 lib/libc/mingw/math/x86/tanf.c