Revert "Add a redis cache to gitea"

This reverts commit c0c396f008.

Causes weird stability issues as the process received sig 15 and
restarts, which is strange!

ansible/roles/intersect-docker/files/gitea/app.ini

@@ -43,8 +43,7 @@ CHARSET  = utf8
 LOG_SQL  = false
 
 [indexer]
-ISSUE_INDEXER_QUEUE_TYPE = redis
-ISSUE_INDEXER_QUEUE_CONN_STR = addr=redis:6379
+ISSUE_INDEXER_PATH = /data/gitea/indexers/issues.bleve
 
 [session]
 PROVIDER_CONFIG = /data/gitea/sessions
@@ -95,14 +94,5 @@ ENABLE_OPENID_SIGNIN = false
 ENABLE_OPENID_SIGNUP = false
 
 [cache]
-ADAPTER         = redis
-HOST = addr=redis:6379
-ITEM_TTL = 168h
-
-[queue]
-TYPE = redis
-CONN_STR = addr=redis:6379
-
-[queue.task]
-TYPE = redis
-CONN_STR = addr=redis:6379
+ADAPTER         = memory
+INTERVAL        = 60

ansible/roles/intersect-docker/files/gitea/docker-compose.yml

@@ -21,12 +21,6 @@ services:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
 
-  redis:
-    image: redis:5-alpine
-    restart: unless-stopped
-    volumes:
-      - ./redis:/data
-
   db:
     image: postgres:12-alpine
     restart: unless-stopped