Revert "Update clearsky.py"

This reverts commit 00d7b70.

Author: RDaxini

pvlib/clearsky.py

@@ -12,9 +12,8 @@
 from scipy.linalg import hankel
 import h5py
 
-from pvlib import atmosphere, tools
+from pvlib import atmosphere, tools, renamed_kwarg_warning
 from pvlib.tools import _degrees_to_index
-from pvlib._deprecation import renamed_kwarg_warning
 
 renamed_kwarg_warning('11.2', 'clearsky_ghi', 'ghi_clear', removal="12.0")
 renamed_kwarg_warning('11.2', 'clearsky', 'ghi_clear', removal="12.0")