CLN: Remove unnecessary block in apply_str (pandas-dev#58077)

Author: rhshadrach

pandas/core/apply.py

@@ -564,22 +564,10 @@ def apply_str(self) -> DataFrame | Series:
                 "axis" not in arg_names or func in ("corrwith", "skew")
             ):
                 raise ValueError(f"Operation {func} does not support axis=1")
-            if "axis" in arg_names:
-                if isinstance(obj, (SeriesGroupBy, DataFrameGroupBy)):
-                    # Try to avoid FutureWarning for deprecated axis keyword;
-                    # If self.axis matches the axis we would get by not passing
-                    #  axis, we safely exclude the keyword.
-
-                    default_axis = 0
-                    if func in ["idxmax", "idxmin"]:
-                        # DataFrameGroupBy.idxmax, idxmin axis defaults to self.axis,
-                        # whereas other axis keywords default to 0
-                        default_axis = self.obj.axis
-
-                    if default_axis != self.axis:
-                        self.kwargs["axis"] = self.axis
-                else:
-                    self.kwargs["axis"] = self.axis
+            if "axis" in arg_names and not isinstance(
+                obj, (SeriesGroupBy, DataFrameGroupBy)
+            ):
+                self.kwargs["axis"] = self.axis
         return self._apply_str(obj, func, *self.args, **self.kwargs)
 
     def apply_list_or_dict_like(self) -> DataFrame | Series: