Retire HAL for STM32F4 / F7 (#20153)

Marlin/src/module/stepper/TMC26X.h

@@ -31,11 +31,7 @@
 // TMC26X drivers have STEP/DIR on normal pins, but ENABLE via SPI
 
 #include <SPI.h>
-#if defined(STM32GENERIC) && defined(STM32F7)
-  #include "../../HAL/STM32_F4_F7/STM32F7/TMC2660.h"
-#else
-  #include <TMC26XStepper.h>
-#endif
+#include <TMC26XStepper.h>
 
 void tmc26x_init_to_defaults();