remove useless cmake instruction

components/_override/CMakeLists.txt

@@ -2,8 +2,6 @@ set(lib_dir ${build_dir}/esp-idf)
 
 if(IDF_TARGET STREQUAL esp32)
     set(driver esp32/i2s.c esp32/i2s_hal.c esp32/spi_bus_lock.c)
-else()
-    return()
 endif()    
 
 string(REPLACE ".c" ".c.obj" driver_obj "${driver}")