Delta disabled by default

Marlin/Configuration.h

@@ -72,7 +72,7 @@
 //============================== Delta Settings =============================
 //===========================================================================
 // Enable DELTA kinematics
-#define DELTA
+//#define DELTA
 
 // Make delta curves from many straight lines (linear interpolation).
 // This is a trade-off between visible corners (not enough segments)