remove DPM flag check inside dataflowpipline

[ravi-databricks]

Since direct publishing mode is in public preview and going forward dpm will be default behavior no need to do following check

dbp_enabled_str = spark.conf.get("pipelines.schema", None)
self.dpm_enabled = True if dbp_enabled_str else False

            target_table = (
                f"{target_cl_name}{target_db_name}.{target_table_name}"
                if self.uc_enabled and self.dpm_enabled
                else silver_dataflow_spec.targetDetails['table']
            )