RP2040: don't initalize contructors during runtime_init()

Author: giulcioffi

targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/pico_runtime/runtime.c

@@ -160,19 +160,6 @@ void runtime_init(void) {
     spin_locks_reset();
     irq_init_priorities();
     alarm_pool_init_default();
-
-    // Start and end points of the constructor list,
-    // defined by the linker script.
-    extern void (*__init_array_start)(void);
-    extern void (*__init_array_end)(void);
-
-    // Call each function in the list.
-    // We have to take the address of the symbols, as __init_array_start *is*
-    // the first function pointer, not the address of it.
-    for (void (**p)(void) = &__init_array_start; p < &__init_array_end; ++p) {
-        (*p)();
-    }
-
 }
 
 void __exit(__unused int status) {