cleanup deprecated X-Weaviate-Api-Key header (#369)

Co-authored-by: Tommy Smith <tommy@weaviate.io>

Author: augustas1

src/connection/grpc.ts

@@ -264,8 +264,6 @@ const getMetadataWithEmbeddingServiceAuth = (config: GrpcConnectionParams, beare
           ...config.headers,
           authorization: bearerToken,
           'X-Weaviate-Cluster-Url': config.host,
-          //  keeping for backwards compatibility for older clusters for now. On newer clusters, Embedding Service reuses Authorization header.
-          'X-Weaviate-Api-Key': bearerToken,
         }
       : config.headers
   );

src/connection/http.ts

@@ -435,7 +435,5 @@ const getAuthHeaders = (config: InternalConnectionParams, bearerToken: string) =
     ? {
         Authorization: `Bearer ${bearerToken}`,
         'X-Weaviate-Cluster-Url': config.host,
-        //  keeping for backwards compatibility for older clusters for now. On newer clusters, Embedding Service reuses Authorization header.
-        'X-Weaviate-Api-Key': bearerToken,
       }
     : undefined;