properly deprecate legacy implementation -- bis (#5391)

* More deprecations

* update message

* typo

Author: NicolasHug

torchvision/datasets/voc.py

@@ -80,7 +80,8 @@ def __init__(
         if year == "2007-test":
             if image_set == "test":
                 warnings.warn(
-                    "Acessing the test image set of the year 2007 with year='2007-test' is deprecated. "
+                    "Accessing the test image set of the year 2007 with year='2007-test' is deprecated "
+                    "since 0.12 and will be removed in 0.14. "
                     "Please use the combination year='2007' and image_set='test' instead."
                 )
                 year = "2007"

torchvision/models/mobilenetv3.py

@@ -29,8 +29,8 @@ def __init__(self, input_channels: int, squeeze_factor: int = 4):
         self.relu = self.activation
         delattr(self, "activation")
         warnings.warn(
-            "This SqueezeExcitation class is deprecated and will be removed in future versions. "
-            "Use torchvision.ops.misc.SqueezeExcitation instead.",
+            "This SqueezeExcitation class is deprecated since 0.12 and will be removed in 0.14. "
+            "Use torchvision.ops.SqueezeExcitation instead.",
             FutureWarning,
         )