[AC-2881] Remove Organization.FlexibleCollections from code (#4552)

* Remove Organization.FlexibleCollections from code

* Drop Organization.FlexibleCollections column in EF databases
(MSSQL column to be retained for 1 additional deployment to support rollback in cloud)

util/PostgresMigrations/Migrations/20240723011507_DropOrganizationFlexibleCollections.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Bit.PostgresMigrations.Migrations;
+
+/// <inheritdoc />
+public partial class DropOrganizationFlexibleCollections : Migration
+{
+    /// <inheritdoc />
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropColumn(
+            name: "FlexibleCollections",
+            table: "Organization");
+    }
+
+    /// <inheritdoc />
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<bool>(
+            name: "FlexibleCollections",
+            table: "Organization",
+            type: "boolean",
+            nullable: false,
+            defaultValue: false);
+    }
+}

util/PostgresMigrations/Migrations/DatabaseContextModelSnapshot.cs

@@ -70,9 +70,6 @@ namespace Bit.PostgresMigrations.Migrations
                     b.Property<DateTime?>("ExpirationDate")
                         .HasColumnType("timestamp with time zone");
 
-                    b.Property<bool>("FlexibleCollections")
-                        .HasColumnType("boolean");
-
                     b.Property<byte?>("Gateway")
                         .HasColumnType("smallint");