Fix ARM delay function (#20901)

Marlin/src/HAL/STM32/HAL.cpp

@@ -57,17 +57,6 @@ uint16_t HAL_adc_result;
 // Public functions
 // ------------------------
 
-// Needed for DELAY_NS() / DELAY_US() on CORTEX-M7
-#if (defined(__arm__) || defined(__thumb__)) && __CORTEX_M == 7
-  // HAL pre-initialization task
-  // Force the preinit function to run between the premain() and main() function
-  // of the STM32 arduino core
-  __attribute__((constructor (102)))
-  void HAL_preinit() {
-    enableCycleCounter();
-  }
-#endif
-
 // HAL initialization task
 void HAL_init() {
   FastIO_init();