diff --git a/src/pytorch_lightning/CHANGELOG.md b/src/pytorch_lightning/CHANGELOG.md
index 8d6fd64a2cb47..469832b23c49b 100644
--- a/src/pytorch_lightning/CHANGELOG.md
+++ b/src/pytorch_lightning/CHANGELOG.md
@@ -174,6 +174,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ### Removed
 
+- Removed deprecated `pytorch_lightning.core.decorators.parameter_validation` from `decorators` ([#13514](https://github.com/Lightning-AI/lightning/pull/13514))
+
+
 - Removed the deprecated `Logger.close` method ([#13149](https://github.com/PyTorchLightning/pytorch-lightning/pull/13149))
 
 
diff --git a/src/pytorch_lightning/core/decorators.py b/src/pytorch_lightning/core/decorators.py
deleted file mode 100644
index 33c83b4b10d6d..0000000000000
--- a/src/pytorch_lightning/core/decorators.py
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright The PyTorch Lightning team.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-from pytorch_lightning.utilities.rank_zero import rank_zero_deprecation, rank_zero_warn
-
-rank_zero_deprecation(
-    "Using `pytorch_lightning.core.decorators.parameter_validation` is deprecated in v1.5, "
-    "and will be removed in v1.7. It has been replaced by automatic parameters tying with "
-    "`pytorch_lightning.utilities.params_tying.set_shared_parameters`"
-)
-
-from functools import wraps  # noqa: E402
-from typing import Callable  # noqa: E402
-
-
-def parameter_validation(fn: Callable) -> Callable:
-    """Validates that the module parameter lengths match after moving to the device. It is useful when tying
-    weights on TPU's.
-
-    Args:
-        fn: ``model_to_device`` method
-
-    Note:
-        TPU's require weights to be tied/shared after moving the module to the device.
-        Failure to do this results in the initialization of new weights which are not tied.
-        To overcome this issue, weights should be tied using the ``on_post_move_to_device`` model hook
-        which is called after the module has been moved to the device.
-
-    See Also:
-        - `XLA Documentation <https://github.com/pytorch/xla/blob/master/TROUBLESHOOTING.md#xla-tensor-quirks>`_
-    """
-
-    @wraps(fn)
-    def inner_fn(self, *args, **kwargs):
-        pre_layer_count = len(list(self.model.parameters()))
-        module = fn(self, *args, **kwargs)
-        self.model.on_post_move_to_device()
-        post_layer_count = len(list(self.model.parameters()))
-
-        if not pre_layer_count == post_layer_count:
-            rank_zero_warn(
-                "The model layers do not match after moving to the target device."
-                " If your model employs weight sharing on TPU,"
-                " please tie your weights using the `on_post_move_to_device` model hook.\n"
-                f"Layer count: [Before: {pre_layer_count} After: {post_layer_count}]"
-            )
-
-        return module
-
-    return inner_fn
diff --git a/tests/tests_pytorch/deprecated_api/test_remove_1-7.py b/tests/tests_pytorch/deprecated_api/test_remove_1-7.py
index 2ae305d2c06b7..17cccbfa80a5e 100644
--- a/tests/tests_pytorch/deprecated_api/test_remove_1-7.py
+++ b/tests/tests_pytorch/deprecated_api/test_remove_1-7.py
@@ -31,7 +31,6 @@
     TorchElasticEnvironment,
 )
 from pytorch_lightning.strategies import SingleDeviceStrategy
-from tests_pytorch.deprecated_api import _soft_unimport_module
 from tests_pytorch.plugins.environments.test_lsf_environment import _make_rankfile
 
 
@@ -76,15 +75,6 @@ def on_post_move_to_device(self):
         trainer.fit(model)
 
 
-def test_v1_7_0_deprecate_parameter_validation():
-
-    _soft_unimport_module("pytorch_lightning.core.decorators")
-    with pytest.deprecated_call(
-        match="Using `pytorch_lightning.core.decorators.parameter_validation` is deprecated in v1.5"
-    ):
-        from pytorch_lightning.core.decorators import parameter_validation  # noqa: F401
-
-
 def test_v1_7_0_deprecated_slurm_job_id():
     trainer = Trainer()
     with pytest.deprecated_call(match="Method `slurm_job_id` is deprecated in v1.6.0 and will be removed in v1.7.0."):