[planner] po: Drop gone src/planner-cell-renderer-list.c from POTFILES

[Mart Raudsepp <mraudsepp src gnome org>]

commit e083b74a31cac4f71ad806877066c1a3af9cfcc4
Author: Mart Raudsepp <leio gentoo org>
Date:   Sun Jun 13 14:37:33 2021 +0300

    po: Drop gone src/planner-cell-renderer-list.c from POTFILES
    
    Fixes: 4a60ffc265e76411d26739ad5317aec4933ef5a7

 po/POTFILES.in | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 062ce1dd..0270cf08 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -57,7 +57,6 @@ src/planner-assignment-model.c
 src/planner-calendar-dialog.c
 src/planner-canvas-line.c
 src/planner-cell-renderer-date.c
-src/planner-cell-renderer-list.c
 src/planner-cell-renderer-popup.c
 src/planner-cmd-manager.c
 src/planner-day-type-dialog.c