Rm unused slack callback, refactor spam() to slack_post()

Follow-up to d554fae7cd

inventory-app/common.py

@@ -93,16 +93,17 @@ def flatten(d, parent_key='', sep='.'):
             items.append((new_key, v))
     return dict(items)
 
-def spam(msg, channel="doorboy"):
+def slack_post(msg, channel):
     if devenv:
         print(f"{channel}: {msg}")
-    else:
-        urls = {
-          "doorboy": const.SLACK_DOORLOG_CALLBACK,
-          "inventory": const.SLACK_INVENTORY_CALLBACK
-        }
-        url = urls.get(channel, const.SLACK_DOORLOG_CALLBACK)
-        requests.post(url, json={"text": msg })
+        return
+
+    channels = {
+      "doorboy": const.SLACK_DOORLOG_CALLBACK,
+    }
+    url = channels.get(channel, const.SLACK_DOORLOG_CALLBACK)
+
+    requests.post(url, json={"text": msg })
 
 def build_query(base_query, fields=[], sort_fields={}):
     selectors = []