Removed the obsolete update functions

update.php

@@ -1602,20 +1602,6 @@ function update_1169() {
 	return UPDATE_SUCCESS;
 }
 
-function update_1170() {
-	$r = q("ALTER TABLE `guid` CHANGE `guid` `guid` VARCHAR( 255 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL");
-	if (!$r)
-		return UPDATE_FAILED;
-	return UPDATE_SUCCESS;
-}
-
-function update_1171() {
-	$r = q("ALTER TABLE `item` CHANGE `guid` `guid` VARCHAR( 255 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL");
-	if (!$r)
-		return UPDATE_FAILED;
-	return UPDATE_SUCCESS;
-}
-
 /*
 ==========
 ATTENTION!