docs(athena/spark): drop redundant prose from _classify_failure

Signed-off-by: Daisuke Taniwaki <daisuketaniwaki@gmail.com>

Author: dtaniwaki

dbt-athena/src/dbt/adapters/athena/spark_connect/job.py

@@ -241,25 +241,19 @@ def submit(self, compiled_code: str) -> SparkConnectResult:
     def _classify_failure(
         self, e: BaseException, session_id: str
     ) -> Tuple[bool, bool, Optional[str]]:
-        # 403 + dead session = Athena reclaimed capacity; retrying onto a
-        # fresh session would race the same regional shortage. The reason
-        # is surfaced in the DbtRuntimeError so dbt's run summary shows it
-        # instead of a bare 403 that reads like an auth misconfiguration.
         if not is_transient_spark_error(e):
             return False, False, None
 
+        # 403 + dead session: Athena reclaimed capacity; a fresh session
+        # would race the same regional shortage.
         if is_grpc_permission_denied(e) and not self._pool.is_session_alive(
             self.athena_client, session_id
         ):
             reason = (
                 "Athena terminated the session (capacity reclamation); reduce "
                 "concurrent DPU consumption or wait for regional capacity"
             )
-            LOGGER.warning(
-                f"Model {self.relation_name} (session {session_id}) - {reason}. "
-                f"Failing the attempt instead of retrying onto a fresh session "
-                f"that would race the same regional shortage."
-            )
+            LOGGER.warning(f"Model {self.relation_name} (session {session_id}) - {reason}")
             return False, False, reason
 
         return True, True, None