Removed not relevent comment

Author: ramboerik

cores/arduino/HardwareTimer.cpp

@@ -939,7 +939,6 @@ void HardwareTimer::detachInterrupt()
   * @brief  Attach interrupt callback on Capture/Compare event
   * @param  channel: Arduino channel [1..4]
   * @param  callback: interrupt callback
-  * @param  arg: pointer to optional argument to associate with interrupt
   * @retval None
   */
 void HardwareTimer::attachInterrupt(uint32_t channel, callback_function_t callback)

cores/arduino/HardwareTimer.h

@@ -150,7 +150,6 @@ class HardwareTimer {
 
     // The following function(s) are available for more advanced timer options
     TIM_HandleTypeDef *getHandle();  // return the handle address for HAL related configuration
-
     int getChannel(uint32_t channel);
     int getLLChannel(uint32_t channel);
     int getIT(uint32_t channel);