Rename offset to point in remove_point()

(cherry picked from commit 4f72a07eaa08484654138ce99d57ce6f3bdf16ed)

doc/classes/Gradient.xml

@@ -57,10 +57,10 @@
 		<method name="remove_point">
 			<return type="void">
 			</return>
-			<argument index="0" name="offset" type="int">
+			<argument index="0" name="point" type="int">
 			</argument>
 			<description>
-				Removes the color at the index [code]offset[/code].
+				Removes the color at the index [code]point[/code].
 			</description>
 		</method>
 		<method name="set_color">

scene/resources/gradient.cpp

@@ -54,7 +54,7 @@ Gradient::~Gradient() {
 void Gradient::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("add_point", "offset", "color"), &Gradient::add_point);
-	ClassDB::bind_method(D_METHOD("remove_point", "offset"), &Gradient::remove_point);
+	ClassDB::bind_method(D_METHOD("remove_point", "point"), &Gradient::remove_point);
 
 	ClassDB::bind_method(D_METHOD("set_offset", "point", "offset"), &Gradient::set_offset);
 	ClassDB::bind_method(D_METHOD("get_offset", "point"), &Gradient::get_offset);