Removed call to rtc_terminate inside MDx platform_terminate, as this freezed RTC on radio power off

platform/targets/MD-3x0/platform.c

@@ -80,7 +80,6 @@ void platform_terminate()
     adc1_terminate();
     nvm_terminate();
     toneGen_terminate();
-    rtc_terminate();
     audio_terminate();
 
     /* Finally, remove power supply */

platform/targets/MD-9600/platform.c

@@ -89,7 +89,6 @@ void platform_terminate()
     /* Shut down all the modules */
     adc1_terminate();
     toneGen_terminate();
-    rtc_terminate();
     chSelector_terminate();
     audio_terminate();
 

platform/targets/MD-UV3x0/platform.c

@@ -89,7 +89,6 @@ void platform_terminate()
     /* Shut down all the modules */
     adc1_terminate();
     nvm_terminate();
-    rtc_terminate();
     toneGen_terminate();
     chSelector_terminate();
     audio_terminate();