remove redundant initialization

CMake/cotire.cmake

@@ -1157,7 +1157,6 @@ function (cotire_scan_includes _includesVar)
 	if (NOT _option_COMPILER_VERSION)
 		set (_option_COMPILER_VERSION "${CMAKE_${_option_LANGUAGE}_COMPILER_VERSION}")
 	endif()
-	set (_cmd "${_option_COMPILER_EXECUTABLE}" ${_option_COMPILER_ARG1})
 	cotire_init_compile_cmd(_cmd "${_option_LANGUAGE}" "${_option_COMPILER_EXECUTABLE}" "${_option_COMPILER_ARG1}")
 	cotire_add_definitions_to_cmd(_cmd "${_option_LANGUAGE}" ${_option_COMPILE_DEFINITIONS})
 	cotire_add_compile_flags_to_cmd(_cmd ${_option_COMPILE_FLAGS})