remove deprecated sync step argument from WandbLogger (Lightning-AI#8763)

* remove deprecated sync step

* update chlog

Author: awaelchli

CHANGELOG.md

@@ -102,6 +102,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Removed the deprecated `model` argument from `ModelCheckpoint.save_checkpoint` ([#8688](https://github.com/PyTorchLightning/pytorch-lightning/pull/8688))
 
 
+- Removed the deprecated `sync_step` argument from `WandbLogger` ([#8763](https://github.com/PyTorchLightning/pytorch-lightning/pull/8763))
+
+
 ### Fixed
 
 - Fixed `trainer.fit_loop.split_idx` always returning `None` ([#8601](https://github.com/PyTorchLightning/pytorch-lightning/pull/8601))

pytorch_lightning/loggers/wandb.py

@@ -113,7 +113,6 @@ def __init__(
         log_model: Optional[bool] = False,
         experiment=None,
         prefix: Optional[str] = "",
-        sync_step: Optional[bool] = None,
         **kwargs,
     ):
         if wandb is None:
@@ -136,12 +135,6 @@ def __init__(
                 "Hint: Upgrade with `pip install --ugrade wandb`."
             )
 
-        if sync_step is not None:
-            warning_cache.deprecation(
-                "`WandbLogger(sync_step=(True|False))` is deprecated in v1.2.1 and will be removed in v1.5."
-                " Metrics are now logged separately and automatically synchronized."
-            )
-
         super().__init__()
         self._offline = offline
         self._log_model = log_model

tests/deprecated_api/test_remove_1-5.py

@@ -22,7 +22,6 @@
 from pytorch_lightning import Callback, Trainer
 from pytorch_lightning.callbacks import ModelCheckpoint
 from pytorch_lightning.core.decorators import auto_move_data
-from pytorch_lightning.loggers import WandbLogger
 from pytorch_lightning.plugins import DeepSpeedPlugin
 from pytorch_lightning.profiler import AdvancedProfiler, BaseProfiler, PyTorchProfiler, SimpleProfiler
 from tests.deprecated_api import no_deprecated_call
@@ -31,12 +30,6 @@
 from tests.helpers.utils import no_warning_call
 
 
-@mock.patch("pytorch_lightning.loggers.wandb.wandb")
-def test_v1_5_0_wandb_unused_sync_step(_):
-    with pytest.deprecated_call(match=r"v1.2.1 and will be removed in v1.5"):
-        WandbLogger(sync_step=True)
-
-
 def test_v1_5_0_old_callback_on_save_checkpoint(tmpdir):
     class OldSignature(Callback):
         def on_save_checkpoint(self, trainer, pl_module):