Clarified usage of replace parameter in insert_rows

Re-introduced the replace boolean parameter.
Added a warning when the user sets the replace parameter to True.
Updated the docstring to let the user know that the replace boolean parameter does nothing.

airflow/providers/oracle/hooks/oracle.py

@@ -251,7 +251,8 @@ def insert_rows(
         table: str,
         rows: list[tuple],
         target_fields=None,
-        commit_every: int = 1000
+        commit_every: int = 1000,
+        replace: bool | None = False,
         **kwargs,
     ) -> None:
         """Insert a collection of tuples into a table.
@@ -271,7 +272,10 @@ def insert_rows(
         :param commit_every: the maximum number of rows to insert in one transaction
             Default 1000, Set greater than 0.
             Set 1 to insert each row in each single transaction
+        :param replace: Does not do anything.
         """
+        if replace:
+            warnings.warn("Using 'replace=True' does not implement any replace functionality currently.", category=UserWarning, stacklevel=2)
         try:
             import numpy as np
         except ImportError: