Reverted all v5 migrations back to v4

src/NadekoBot/Migrations/Mysql/20220725155953_xpitemshop.cs

@@ -0,0 +1,45 @@
+using System;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations.Mysql
+{
+    public partial class xpitemshop : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "xpshopowneditem",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    userid = table.Column<ulong>(type: "bigint unsigned", nullable: false),
+                    itemtype = table.Column<int>(type: "int", nullable: false),
+                    isusing = table.Column<bool>(type: "tinyint(1)", nullable: false),
+                    itemkey = table.Column<string>(type: "varchar(255)", nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    dateadded = table.Column<DateTime>(type: "datetime(6)", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_xpshopowneditem", x => x.id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_xpshopowneditem_userid_itemtype_itemkey",
+                table: "xpshopowneditem",
+                columns: new[] { "userid", "itemtype", "itemkey" },
+                unique: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "xpshopowneditem");
+        }
+    }
+}