[ENH]: Remove decorator from glm/regression

doc/changes/latest.rst

@@ -60,4 +60,5 @@ Changes
 - Refactor error raising tests using context managers (:gh:`3854` BY `François Paugam`_)
 - Added warning to deprecate `darkness` in ``surf_plotting._compute_facecolors_matplotlib`` and ``html_surface._get_vertexcolor`` (:gh`3855` by `Alisha Kodibagkar`_)
 - :bdg-secondary:`Doc` Replace skipped doctests with default code-blocks (:gh:`3681` in by `Patrick Sadil`_)
-- Move the `~nilearn.plotting.html_surface._mix_colormaps` to `cm.py` in :mod:`~nilearn.plotting` (:gh:`3919` by `Ahmad Chamma`_)
+- Move the `~nilearn.plotting.html_surface._mix_colormaps` to `cm.py` in :mod:`~nilearn.plotting` (:gh:`3919` by `Ahmad Chamma`_)
+- Remove deprecation decorator from `~nilearn.glm.regression` (:gh:`3921` by `Ahmad Chamma`_)

nilearn/glm/regression.py

@@ -17,8 +17,6 @@
 
 __docformat__ = "restructuredtext en"
 
-import functools
-import warnings
 
 import numpy as np
 import scipy.linalg as spl
@@ -29,28 +27,6 @@
 from nilearn.glm.model import LikelihoodModelResults
 
 
-def _deprecation_warning(
-    old_param, new_param, start_version, end_version="future"
-):
-    def _warned_func(func):
-        @functools.wraps(func)
-        def wrapper(*args, **kwargs):
-            warnings.warn(
-                category=FutureWarning,
-                message=(
-                    f"'{old_param}' has been deprecated "
-                    f"in version {start_version} "
-                    f"and will be removed in version {end_version}.\n"
-                    f"Please use '{new_param}' instead."
-                ),
-            )
-            return func(*args, **kwargs)
-
-        return wrapper
-
-    return _warned_func
-
-
 class OLSModel:
     """A simple ordinary least squares model.