diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20bbde54b67db..bfec18599ab76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -57,6 +57,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ### Removed
 
+- Remove deprecated method `ClusterEnvironment.creates_children` ([#10339](https://github.com/PyTorchLightning/pytorch-lightning/issues/10339))
+
+
 - Removed deprecated `TrainerModelHooksMixin.is_function_implemented` and `TrainerModelHooksMixin.has_arg` ([#10322](https://github.com/PyTorchLightning/pytorch-lightning/pull/10322))
 
 
diff --git a/pytorch_lightning/plugins/environments/cluster_environment.py b/pytorch_lightning/plugins/environments/cluster_environment.py
index 237842b4ffb59..dd1a43c45756a 100644
--- a/pytorch_lightning/plugins/environments/cluster_environment.py
+++ b/pytorch_lightning/plugins/environments/cluster_environment.py
@@ -13,8 +13,6 @@
 # limitations under the License.
 from abc import ABC, abstractmethod
 
-from pytorch_lightning.utilities import rank_zero_deprecation
-
 
 class ClusterEnvironment(ABC):
     """Specification of a cluster environment."""
@@ -24,19 +22,6 @@ class ClusterEnvironment(ABC):
     def creates_processes_externally(self) -> bool:
         """Whether the environment creates the subprocesses or not."""
 
-    def creates_children(self) -> bool:
-        """Whether the environment creates the subprocesses or not.
-
-        .. deprecated:: v1.5
-            This method was deprecated in v1.5 and will be removed in v1.6. Use the property
-            :attr:`creates_processes_externally` instead.
-        """
-        rank_zero_deprecation(
-            f"`{self.__class__.__name__}.creates_children()` was deprecated in v1.5 and will be removed in v1.6."
-            " Use the property :attr:`creates_processes_externally` instead."
-        )
-        return self.creates_processes_externally
-
     @abstractmethod
     def master_address(self) -> str:
         """The master address through which all processes connect and communicate."""
diff --git a/tests/deprecated_api/test_remove_1-6.py b/tests/deprecated_api/test_remove_1-6.py
index 9faf80435d953..a19a3487c6077 100644
--- a/tests/deprecated_api/test_remove_1-6.py
+++ b/tests/deprecated_api/test_remove_1-6.py
@@ -22,12 +22,6 @@
 from pytorch_lightning.callbacks import ModelCheckpoint
 from pytorch_lightning.callbacks.early_stopping import EarlyStopping
 from pytorch_lightning.plugins import PrecisionPlugin
-from pytorch_lightning.plugins.environments import (
-    KubeflowEnvironment,
-    LightningEnvironment,
-    SLURMEnvironment,
-    TorchElasticEnvironment,
-)
 from pytorch_lightning.plugins.training_type import DDPPlugin, DDPSpawnPlugin
 from pytorch_lightning.utilities.distributed import rank_zero_deprecation, rank_zero_warn
 from pytorch_lightning.utilities.model_helpers import is_overridden
@@ -420,20 +414,6 @@ def test_v1_6_0_is_slurm_managing_tasks():
         trainer._accelerator_connector.is_slurm_managing_tasks = False
 
 
-@pytest.mark.parametrize(
-    "cluster_environment",
-    [
-        KubeflowEnvironment(),
-        LightningEnvironment(),
-        SLURMEnvironment(),
-        TorchElasticEnvironment(),
-    ],
-)
-def test_v1_6_0_cluster_environment_creates_children(cluster_environment):
-    with pytest.deprecated_call(match="was deprecated in v1.5 and will be removed in v1.6"):
-        cluster_environment.creates_children()
-
-
 def test_v1_6_0_master_params():
     with pytest.deprecated_call(match="`PrecisionPlugin.master_params` was deprecated in v1.5"):
         PrecisionPlugin().master_params(Mock(spec=Optimizer))