EAGLESIX-2708 Removed unused lines

lib/pipeline/expressions/SubtractExpression.js

@@ -62,8 +62,6 @@ proto.evaluateInternal = function evaluateInternal(vars) {
 			" from a " +
 			typeof left);
 	}
-	if (left instanceof Date || right instanceof Date) throw new Error("$subtract does not support dates; code 16376");
-	return left - right;
 };
 
 /** Register Expression */