Drop -Werror.

Would be nice to get warning count changes highlighted in CI though.

Clang's increasingly suspect diagnostics has caused multiple build
breaks without highlighting any actual issues.
Also: https://embeddedartistry.com/blog/2017/05/22/werror-is-not-your-friend/

Change-Id: I7dc82da58cd86f7b4f1a9fb511c4c039419271d4


[ROCm/ROCR-Runtime commit: efeee734db]

projects/rocr-runtime/runtime/hsa-runtime/CMakeLists.txt

@@ -126,7 +126,7 @@ target_include_directories( ${CORE_RUNTIME_TARGET}
 set_property(TARGET ${CORE_RUNTIME_TARGET} PROPERTY INSTALL_RPATH "$ORIGIN;$ORIGIN/../../lib;$ORIGIN/../../lib64;$ORIGIN/../lib64" )
 
 ## ------------------------- Linux Compiler and Linker options -------------------------
-set ( HSA_CXX_FLAGS ${HSA_COMMON_CXX_FLAGS} -Werror -fexceptions -fno-rtti -fvisibility=hidden -Wno-error=missing-braces -Wno-error=sign-compare -Wno-sign-compare -Wno-write-strings -Wno-conversion-null -fno-math-errno -fno-threadsafe-statics -fmerge-all-constants -fms-extensions -Wno-error=comment -Wno-comment -Wno-error=pointer-arith -Wno-pointer-arith -Wno-error=unused-variable -Wno-error=unused-function )
+set ( HSA_CXX_FLAGS ${HSA_COMMON_CXX_FLAGS} -fexceptions -fno-rtti -fvisibility=hidden -Wno-error=missing-braces -Wno-error=sign-compare -Wno-sign-compare -Wno-write-strings -Wno-conversion-null -fno-math-errno -fno-threadsafe-statics -fmerge-all-constants -fms-extensions -Wno-error=comment -Wno-comment -Wno-error=pointer-arith -Wno-pointer-arith -Wno-error=unused-variable -Wno-error=unused-function )
 
 ## Extra image settings - audit!
 set ( HSA_CXX_FLAGS ${HSA_CXX_FLAGS} -Wno-deprecated-declarations )