[sanitizer] Don't disable LLVM_ENABLE_PER_TARGET_RUNTIME_DIR (#230)

Avoids warning after llvm/llvm-project/pull/87866

Author: vitalybuka

zorg/buildbot/builders/sanitizers/buildbot_cmake.sh

@@ -51,7 +51,6 @@ CMAKE_COMMON_OPTIONS+=" -DLLVM_ENABLE_PROJECTS=clang;lld"
 CMAKE_COMMON_OPTIONS+=" -DLLVM_ENABLE_RUNTIMES=libcxx;libcxxabi;compiler-rt;libunwind"
 CMAKE_COMMON_OPTIONS+=" -DLLVM_BUILD_LLVM_DYLIB=ON"
 CMAKE_COMMON_OPTIONS+=" -DLLVM_ENABLE_ASSERTIONS=ON"
-CMAKE_COMMON_OPTIONS+=" -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF" # for "standalone compiler-rt"
 CMAKE_COMMON_OPTIONS+=" ${CMAKE_ARGS}"
 
 buildbot_update