Drop sqlite support

.github/workflows/test.yml

@@ -18,14 +18,10 @@ jobs:
         python-version: ["3.10", "3.11"]
         db:
           - "postgres://postgres:postgres@localhost/postgres"
-          - "sqlite:///takahe.db"
         include:
           - db: "postgres://postgres:postgres@localhost/postgres"
             db_name: postgres
             search: true
-          - db: "sqlite:///takahe.db"
-            db_name: sqlite
-            search: false
     services:
       postgres:
         image: postgres:15

docs/releases/0.9.rst

@@ -45,6 +45,9 @@ This release's major changes:
 * The logged-in homepage now shows a list of identities to select from as well
   as a set of recommended apps to use for timeline interfaces.
 
+* We have totally dropped our alpha-quality SQLite support; it just doesn't have
+  sufficient full-text-search and JSON operator support, unfortunately.
+
 There are many minor changes to support the new direction; important ones include:
 
 * The dark/light mode toggle is now a User (login) setting, not an Identity setting