cpu/lm4f120: remove useless gpio_pp_t type

Signed-off-by: Marc Poulhiès <dkm@kataplop.net>

cpu/lm4f120/include/periph_cpu.h

@@ -57,18 +57,6 @@ typedef enum {
 /** @} */
 #endif /* ndef DOXYGEN */
 
-/**
- * @brief   Override values for pull register configuration
- * @{
- */
-#define HAVE_GPIO_PP_T
-typedef enum {
-  GPIO_NOPULL = GPIO_PIN_TYPE_STD,          /**< do not use internal pull resistors */
-  GPIO_PULLUP = GPIO_PIN_TYPE_STD_WPU,	    /**< enable internal pull-up resistor */
-  GPIO_PULLDOWN = GPIO_PIN_TYPE_STD_WPD	    /**< enable internal pull-down resistor */
-} gpio_pp_t;
-/** @} */
-
 /**
  * @brief   Override values for pin direction configuration
  * @{