lineage: RIP Slack

Change-Id: Ib76cc607572f20e4bf52bb36af16e849c2947d1d
diff --git a/snippets/lineage.xml b/snippets/lineage.xml
index 70639b0..294e831 100644
--- a/snippets/lineage.xml
+++ b/snippets/lineage.xml
@@ -192,7 +192,6 @@
   <project path="lineage/cve" name="LineageOS/cve_tracker" groups="infra" revision="master" />
   <project path="lineage/hudson" name="LineageOS/hudson" groups="infra" revision="master" />
   <project path="lineage/mirror" name="LineageOS/mirror" groups="infra" revision="master" />
-  <project path="lineage/slackbot" name="LineageOS/slackbot" groups="infra" revision="master" />
   <project path="lineage/website" name="LineageOS/www" groups="infra" revision="master" />
   <project path="lineage/wiki" name="LineageOS/lineage_wiki" groups="infra" revision="master" />