CMake: don't install tablegen

Since it's an llvm-internal tool, we shouldn't install it.

(This depends on Clang r189127 and lld r189128.)

llvm-svn: 189130

cmake/modules/TableGen.cmake

@@ -126,6 +126,4 @@ macro(add_tablegen target project)
   if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD AND NOT BEOS )
     target_link_libraries(${target} pthread)
   endif()
-
-  install(TARGETS ${target} RUNTIME DESTINATION bin)
 endmacro()