CMake: Temporarily removing find clang block

New libs have not landed in the SVN repository. Once they are up, this commit will be reverted.

build_files/cmake/platform/platform_apple.cmake

@@ -333,12 +333,13 @@ if(WITH_LLVM)
   if(NOT LLVM_FOUND)
     message(FATAL_ERROR "LLVM not found.")
   endif()
-  if(WITH_CLANG)
-    find_package(Clang)
-    if(NOT CLANG_FOUND)
-       message(FATAL_ERROR "Clang not found.")
-    endif()
-  endif()
+# Temporarily removing clang - new libs still need to be committed
+#  if(WITH_CLANG)
+#    find_package(Clang)
+#    if(NOT CLANG_FOUND)
+#       message(FATAL_ERROR "Clang not found.")
+#    endif()
+#  endif()
 
 endif()