[libcxx][libcxxabi] Remove the unused CMake checks
These seemed to have been used in the past but were since removed
by the add_compile_flags_if_supported functions that combine these
these checks and adding the flag, but the original checks were never
removed.
Differential Revision: https://reviews.llvm.org/D62566
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@362058 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index cedc767..a7a684c 100644
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -76,15 +76,6 @@
include(CheckLibcxxAtomic)
endif()
-# Check compiler flags
-
-check_cxx_compiler_flag(/WX LIBCXX_HAS_WX_FLAG)
-check_cxx_compiler_flag(/WX- LIBCXX_HAS_NO_WX_FLAG)
-check_cxx_compiler_flag(/EHsc LIBCXX_HAS_EHSC_FLAG)
-check_cxx_compiler_flag(/EHs- LIBCXX_HAS_NO_EHS_FLAG)
-check_cxx_compiler_flag(/EHa- LIBCXX_HAS_NO_EHA_FLAG)
-check_cxx_compiler_flag(/GR- LIBCXX_HAS_NO_GR_FLAG)
-
# Check libraries
if(WIN32 AND NOT MINGW)
# TODO(compnerd) do we want to support an emulation layer that allows for the
