Enable QUICK_HOME for deltabot.

Marlin/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5 
 #define Y_HOME_RETRACT_MM 5 
 #define Z_HOME_RETRACT_MM 5 
-//#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
+#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}