[dsymutil] Disable dsymutil/X86/reproducer.test on windows.

The dsymutil/X86/reproducer.test test could create paths
longer than MAX_PATH:

C:\ps4-buildslave2\llvm-clang-x86_64-expensive-checks-win
\build\test\tools\dsymutil\X86\Output\reproducer.test.tmp.repro
\ps4-buildslave2\llvm-clang-x86_64-expensive-checks-win\build
\test\tools\dsymutil\X86\Output\reproducer.test.tmp\Inputs\
basic1.macho.x86_64.o

Disable this test on windows.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D85294