committing changes in /etc made by "apt-get remove certbot"

Package changes:
-python3-certbot-apache 0.39.0-1 all

diff --git a/systemd/system/certbot.timer b/systemd/system/certbot.timer
new file mode 120000 (symlink)
index 0000000..dc1dc0c
--- /dev/null
+++ b/systemd/system/certbot.timer
@@ -0,0 +1 @@
+/dev/null
\ No newline at end of file