Remove unnecessary sql file

sql/recreate_attachments_table.sql

@@ -1,38 +0,0 @@
-BEGIN TRANSACTION;
-
-DROP TYPE IF EXISTS dimension CASCADE;
-DROP TABLE IF EXISTS attachments CASCADE;
-
-CREATE TYPE dimension AS
-    ( width  int
-    , height int
-    );
-
-CREATE TABLE IF NOT EXISTS attachments
-    ( attachment_id bigserial primary key
-    , mimetype text NOT NULL
-    , creation_time timestamp with time zone NOT NULL
-    , sha256_hash text NOT NULL UNIQUE
-    , phash bigint
-    , illegal boolean NOT NULL DEFAULT false
-    , post_id bigint NOT NULL
-    , resolution dimension
-    , CHECK
-        (
-            (mimetype NOT IN ('image/jpeg', 'image/png', 'image/gif'))
-            OR
-            (phash IS NOT NULL)
-        )
-    , CONSTRAINT post_fk FOREIGN KEY (post_id) REFERENCES posts (post_id) ON DELETE CASCADE
-    );
-CREATE INDEX attachments_creation_time_idx  ON attachments (creation_time);
-CREATE INDEX attachments_post_id_idx        ON attachments (post_id);
-CREATE INDEX attachments_sha256_hash_idx    ON attachments (sha256_hash);
---
--- Index using the bktree extension for quickly getting the closest phashes
-CREATE INDEX attachments_phash_bktree_index ON attachments USING spgist (phash bktree_ops);
-
-GRANT SELECT ON attachments                 TO chan_archive_anon;
-GRANT ALL ON attachments                    TO chan_archiver;
-
-COMMIT;