refactor: Instead of deleting everything just delete test records

Author: spuerta10

src/db/scripts/cleanup/01_drop_stored_procedures.sql

@@ -0,0 +1,16 @@
+\if :{?DB_NAME}
+    \c :DB_NAME
+\else
+    \c event_access;
+\endif
+
+-- ===============================================
+-- Cleanup inserted users and tickets
+-- ===============================================
+
+DELETE FROM tickets
+WHERE seat IN ('A12','B05','C18','D10','E20')
+  AND gate IN ('G1','G2','G3');
+
+DELETE FROM users
+WHERE username IN ('spuertaf','juanperez');