Remove deprecated disable_validation property from Trainer (#10450)

CHANGELOG.md

@@ -127,8 +127,13 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Removed deprecated `Trainer.train_loop` property in favor of `Trainer.fit_loop` ([#10482](https://github.com/PyTorchLightning/pytorch-lightning/pull/10482))
 
 
+- Removed deprecated `disable_validation` property from Trainer ([#10450](https://github.com/PyTorchLightning/pytorch-lightning/pull/10450))
+
+
 - Removed deprecated `CheckpointConnector.hpc_load` property in favor of `CheckpointConnector.restore` ([#10525](https://github.com/PyTorchLightning/pytorch-lightning/pull/10525))
 
+
+
 ### Fixed
 
 - Fixed an issue where class or init-only variables of dataclasses were passed to the dataclass constructor in `utilities.apply_to_collection` ([#9702](https://github.com/PyTorchLightning/pytorch-lightning/issues/9702))

pytorch_lightning/trainer/trainer.py

@@ -1783,15 +1783,6 @@ def _should_reload_dl_epoch(self) -> bool:
         n_epochs = self.reload_dataloaders_every_n_epochs
         return n_epochs and (not self.current_epoch % n_epochs)
 
-    @property
-    def disable_validation(self) -> bool:
-        """Check if validation is disabled during training."""
-        rank_zero_deprecation(
-            "`trainer.disable_validation` is deprecated in v1.4 and will be removed in v1.6."
-            " Use `not trainer.enable_validation` instead."
-        )
-        return not self.enable_validation
-
     @property
     def enable_validation(self) -> bool:
         """Check if we should run validation during training."""

tests/deprecated_api/test_remove_1-6.py

@@ -47,9 +47,3 @@ def test_v1_6_0_reload_dataloaders_every_epoch(tmpdir):
         [call.val_dataloader()] + [call.train_dataloader(), call.val_dataloader()] * 3 + [call.test_dataloader()]
     )
     assert tracker.mock_calls == expected_sequence
-
-
-def test_v1_6_0_deprecated_disable_validation():
-    trainer = Trainer()
-    with pytest.deprecated_call(match="disable_validation` is deprecated in v1.4"):
-        _ = trainer.disable_validation