Rework constructor for mypy. Remove unused functions.

dbt/adapters/bigquery/impl.py

@@ -217,6 +217,10 @@ class BigQueryAdapter(BaseAdapter):
         ConstraintType.foreign_key: ConstraintSupport.ENFORCED,
     }
 
+    def __init__(self, config) -> None:
+        super().__init__(config)
+        self.connections: BigQueryConnectionManager = self.connections
+
     ###
     # Implementations of abstract methods
     ###
@@ -481,40 +485,6 @@ def _agate_to_schema(
             bq_schema.append(SchemaField(col_name, type_))  # type: ignore[arg-type]
         return bq_schema
 
-    def _materialize_as_view(self, model: Dict[str, Any]) -> str:
-        model_database = model.get("database")
-        model_schema = model.get("schema")
-        model_alias = model.get("alias")
-        model_code = model.get("compiled_code")
-
-        logger.debug("Model SQL ({}):\n{}".format(model_alias, model_code))
-        self.connections.create_view(
-            database=model_database, schema=model_schema, table_name=model_alias, sql=model_code
-        )
-        return "CREATE VIEW"
-
-    def _materialize_as_table(
-        self,
-        model: Dict[str, Any],
-        model_sql: str,
-        decorator: Optional[str] = None,
-    ) -> str:
-        model_database = model.get("database")
-        model_schema = model.get("schema")
-        model_alias = model.get("alias")
-
-        if decorator is None:
-            table_name = model_alias
-        else:
-            table_name = "{}${}".format(model_alias, decorator)
-
-        logger.debug("Model SQL ({}):\n{}".format(table_name, model_sql))
-        self.connections.create_table(
-            database=model_database, schema=model_schema, table_name=table_name, sql=model_sql
-        )
-
-        return "CREATE TABLE"
-
     @available.parse(lambda *a, **k: "")
     def copy_table(self, source, destination, materialization):
         if materialization == "incremental":