[Build] Don't install swift-frontend twice, incorrectly

Author: DougGregor

tools/driver/CMakeLists.txt

@@ -50,9 +50,6 @@ if(NOT SWIFT_BUILT_STANDALONE)
 endif()
 
 add_dependencies(compiler swift-frontend)
-swift_install_in_component(FILES "${SWIFT_RUNTIME_OUTPUT_INTDIR}/swift-frontend${CMAKE_EXECUTABLE_SUFFIX}"
-                           DESTINATION "bin"
-                           COMPONENT compiler)
 swift_install_in_component(FILES "${SWIFT_RUNTIME_OUTPUT_INTDIR}/swift${CMAKE_EXECUTABLE_SUFFIX}"
                            DESTINATION "bin"
                            COMPONENT compiler)