Drop old TaskRunCounter table (not used anymore)

Author: matt-aitken

packages/database/prisma/migrations/20240523082748_drop_old_task_run_counter_table/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - You are about to drop the `TaskRunCounter` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropTable
+DROP TABLE "TaskRunCounter";

packages/database/prisma/schema.prisma

@@ -1731,12 +1731,6 @@ model TaskRunDependency {
   updatedAt DateTime @updatedAt
 }
 
-/// deprecated, we hadn't included the project id in the unique constraint
-model TaskRunCounter {
-  taskIdentifier String @id
-  lastNumber     Int    @default(0)
-}
-
 /// Used for the TaskRun number (e.g. #1,421)
 model TaskRunNumberCounter {
   id String @id @default(cuid())