git-branch-list(drop_branch): Remove `sed` backup file

We don't really care about this backup file, so once the `sed` operation
is finished, remove it.

1 files changed, 1 insertions, 0 deletions

diff --git a/git-branch-list b/git-branch-list
index 26098e4..167bad4 100755
--- a/git-branch-list
+++ b/git-branch-list
@@ -42,6 +42,7 @@ function drop_branch () {
 	fi
 
 	sed -i '.bak' "/$branch/d" "$DATABASE"
+	rm "${DATABASE}.bak"
 }
 
 function list_branches () {