[CMake] Also OptionTests can be free from add_dependencies() with add_public_tablegen_target().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195928 91177308-0d34-0410-b5e6-96231b3b80d8

unittests/Option/CMakeLists.txt

@@ -11,5 +11,3 @@ add_public_tablegen_target(OptsTestTableGen)
 add_llvm_unittest(OptionTests
   OptionParsingTest.cpp
   )
-
-add_dependencies(OptionTests OptsTestTableGen)