Remove redundant button

Fix parent-id type issue

ext/relationships/theme.php

@@ -40,7 +40,7 @@ class RelationshipsTheme extends Themelet
         return SHM_POST_INFO(
             "Parent",
             !$user->is_anonymous(),
-            $image->parent_id ?: "None",
+            strval($image->parent_id) ?: "None",
             INPUT(["type"=>"number", "name"=>"tag_edit__parent", "value"=>$image->parent_id])
         );
     }

themes/danbooru2/view.theme.php

@@ -72,7 +72,6 @@ class CustomViewImageTheme extends ViewImageTheme
 				<input name='search' type='text'  style='width:75%'>
 				<input type='submit' value='Go' style='width:20%'>
 				<input type='hidden' name='q' value='/post/list'>
-				<input type='submit' value='Find' style='display: none;'>
 			</form>
 		";