revert 3953705682

that's not how it works

roles/matrix-synapse/templates/goofys/env-goofys.j2

@@ -1,3 +1,2 @@
 AWS_ACCESS_KEY={{ matrix_s3_media_store_aws_access_key }}
 AWS_SECRET_KEY={{ matrix_s3_media_store_aws_secret_key }}
-{% matrix_s3_media_store_custom_endpoint_enabled %}ENDPOINT={{ matrix_s3_media_store_custom_endpoint }}{% endif %}