Remove INTERFACE copts/linkopts from external_cc_library header libraries. (#14216)

I believe that this is the cause of a lot of option issues in users of
header external libraries (happens to include vulkan and cuda hals).
Took my quite a bit of hunting to find this being done incorrectly.

Fixes #14211

build_tools/cmake/external_cc_library.cmake

diff --git a/build_tools/cmake/external_cc_library.cmake b/build_tools/cmake/external_cc_library.cmake
index c7cefc0..c74695b 100644
--- a/build_tools/cmake/external_cc_library.cmake
+++ b/build_tools/cmake/external_cc_library.cmake
@@ -158,16 +158,6 @@
         "$<BUILD_INTERFACE:${IREE_BINARY_DIR}>"
         "$<BUILD_INTERFACE:${_RULE_INCLUDES}>"
     )
-    target_compile_options(${_NAME}
-      INTERFACE
-        ${IREE_DEFAULT_COPTS}
-        ${_RULE_COPTS}
-    )
-    target_link_options(${_NAME}
-      INTERFACE
-        ${IREE_DEFAULT_LINKOPTS}
-        ${_RULE_LINKOPTS}
-    )
     target_link_libraries(${_NAME}
       INTERFACE
         ${_RULE_DEPS}