Rm asset signer endpoint

Author: alukach

src/stac_auth_proxy/handlers/__init__.py

@@ -2,6 +2,5 @@
 
 from .healthz import HealthzHandler
 from .reverse_proxy import ReverseProxyHandler
-from .s3_asset_signer import S3AssetSigner
 
-__all__ = ["ReverseProxyHandler", "HealthzHandler", "S3AssetSigner"]
+__all__ = ["ReverseProxyHandler", "HealthzHandler"]