Remove extra macro

Marlin/src/core/macros.h

@@ -292,8 +292,6 @@
 #define FMOD(x, y)  fmodf(x, y)
 #define HYPOT(x,y)  SQRT(HYPOT2(x,y))
 
-#define I2C_ADDRESS(A) (typeof(A))(TERN(TARGET_LPC1768, (A) << 1, A))
-
 // Use NUM_ARGS(__VA_ARGS__) to get the number of variadic arguments
 #define _NUM_ARGS(_,Z,Y,X,W,V,U,T,S,R,Q,P,O,N,M,L,K,J,I,H,G,F,E,D,C,B,A,OUT,...) OUT
 #define NUM_ARGS(V...) _NUM_ARGS(0,V,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)