prefs: code cleanup

modules/pref-feeds.php

@@ -1132,7 +1132,7 @@
 			</div>";
 		
 		print "<input onclick=\"javascript:displayDlg('quickAddFeed')\"
-			type=\"submit\" id=\"subscribe_to_feed_btn\" 
+			type=\"submit\"
 			class=\"button\" value=\"".__('Subscribe to feed')."\"> ";
 
 		print "<input onclick=\"javascript:editSelectedFeed()\"

modules/pref-filters.php

@@ -314,7 +314,6 @@
 		print "<input type=\"submit\" 
 			class=\"button\" 
 			onclick=\"return displayDlg('quickAddFilter', false)\" 
-			id=\"create_filter_btn\"
 			value=\"".__('Create filter')."\"> "; 
 
 		print "<input type=\"submit\" class=\"button\"

modules/pref-labels.php

@@ -135,7 +135,6 @@
 		print "<div class=\"prefGenericAddBox\">";
 
 		print"<input type=\"submit\" class=\"button\" 
-			id=\"label_create_btn\"
 			onclick=\"return addLabel()\" 
 			value=\"".__('Create label')."\"> ";
 

modules/pref-users.php

@@ -370,7 +370,6 @@
 		}
 
 		print "<input type=\"submit\" class=\"button\" 
-			id=\"user_add_btn\" 
 			onclick=\"javascript:addUser()\" value=\"".__('Create user')."\">";
 
 		print "