modules: hal_rpi_pico: Use Zephyr noinline definition

Zephyr alread defines __noinline attribute in its toolchain haders.

Signed-off-by: Flavio Ceolin <[email protected]>

Author: ceolin

modules/hal_rpi_pico/pico/config_autogen.h

@@ -45,8 +45,4 @@
 /* Two definitions required for the flash driver */
 #define __STRING(x) #x
 
-#ifndef __noinline
-#define __noinline __attribute__((noinline))
-#endif
-
 #endif