diff --git a/python-package/xgboost/__init__.py b/python-package/xgboost/__init__.py
index 220093b47..f6060973e 100644
--- a/python-package/xgboost/__init__.py
+++ b/python-package/xgboost/__init__.py
@@ -5,15 +5,7 @@ Contributors: https://github.com/dmlc/xgboost/blob/master/CONTRIBUTORS.md
 
 from . import tracker  # noqa
 from . import collective, dask
-from .core import (
-    Booster,
-    DataIter,
-    DeviceQuantileDMatrix,
-    DMatrix,
-    QuantileDMatrix,
-    _py_version,
-    build_info,
-)
+from .core import Booster, DataIter, DMatrix, QuantileDMatrix, _py_version, build_info
 from .tracker import RabitTracker  # noqa
 from .training import cv, train
 
@@ -38,7 +30,6 @@ __version__ = _py_version()
 __all__ = [
     # core
     "DMatrix",
-    "DeviceQuantileDMatrix",
     "QuantileDMatrix",
     "Booster",
     "DataIter",
diff --git a/python-package/xgboost/core.py b/python-package/xgboost/core.py
index e8bc735e6..215bdd639 100644
--- a/python-package/xgboost/core.py
+++ b/python-package/xgboost/core.py
@@ -1635,20 +1635,6 @@ class QuantileDMatrix(DMatrix):
         self.handle = handle
 
 
-class DeviceQuantileDMatrix(QuantileDMatrix):
-    """Use `QuantileDMatrix` instead.
-
-    .. deprecated:: 1.7.0
-
-    .. versionadded:: 1.1.0
-
-    """
-
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        warnings.warn("Please use `QuantileDMatrix` instead.", FutureWarning)
-        super().__init__(*args, **kwargs)
-
-
 Objective = Callable[[np.ndarray, DMatrix], Tuple[np.ndarray, np.ndarray]]
 Metric = Callable[[np.ndarray, DMatrix], Tuple[str, float]]
 
diff --git a/python-package/xgboost/dask/__init__.py b/python-package/xgboost/dask/__init__.py
index c5140a1fe..bd23df21b 100644
--- a/python-package/xgboost/dask/__init__.py
+++ b/python-package/xgboost/dask/__init__.py
@@ -711,20 +711,6 @@ class DaskQuantileDMatrix(DaskDMatrix):
         return args
 
 
-class DaskDeviceQuantileDMatrix(DaskQuantileDMatrix):
-    """Use `DaskQuantileDMatrix` instead.
-
-    .. deprecated:: 1.7.0
-
-    .. versionadded:: 1.2.0
-
-    """
-
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        warnings.warn("Please use `DaskQuantileDMatrix` instead.", FutureWarning)
-        super().__init__(*args, **kwargs)
-
-
 def _create_quantile_dmatrix(
     feature_names: Optional[FeatureNames],
     feature_types: Optional[Union[Any, List[Any]]],