Parallelize SQL queries

ts/util/assert.ts

@@ -67,11 +67,3 @@ export function strictAssert(condition: unknown, message: string): void {
     throw new Error(message);
   }
 }
-
-/**
- * Asserts that the type of value is not a promise.
- * (Useful for database modules)
- */
-export function assertSync<T, X>(value: T extends Promise<X> ? never : T): T {
-  return value;
-}