refactor(appkit): remove deprecated Lakebase V1 connector

The LakebaseV1Connector was for Lakebase Provisioned only, which is not
supported by AppKit. Remove it entirely — the standalone @databricks/lakebase
package and the lakebase connector wrapper (for Lakebase Autoscaling) remain.

Signed-off-by: Pawel Kosiec <pawel.kosiec@databricks.com>

Author: pkosiec

packages/appkit/src/connectors/index.ts

@@ -2,7 +2,6 @@ export * from "./files";
 export * from "./genie";
 export * from "./jobs";
 export * from "./lakebase";
-export * from "./lakebase-v1";
 export * from "./mcp";
 export * from "./sql-warehouse";
 export * from "./vector-search";