Revert "Clear method in GXproperties data type was not working (#877)"

This reverts commit ec51162.

Author: iroqueta

common/src/main/java/com/genexus/util/GXProperties.java

@@ -72,7 +72,6 @@ public int count() {
 
 	public void clear() {
 		properties.clear();
-		originalProperties.clear();
 	}
 
 	public GXProperty first() {