Remove outdated information on ShapeFeature

pytensor/tensor/rewriting/shape.py

@@ -99,18 +99,6 @@ class ShapeFeature(Feature):
 
     Notes
     -----
-    Right now there is only the ConvOp that could really take
-    advantage of this shape inference, but it is worth it even
-    just for the ConvOp.  All that's necessary to do shape
-    inference is 1) to mark shared inputs as having a particular
-    shape, either via a .tag or some similar hacking; and 2) to
-    add an optional In() argument to promise that inputs will
-    have a certain shape (or even to have certain shapes in
-    certain dimensions).
-
-    We can't automatically infer the shape of shared variables as they can
-    change of shape during the execution by default.
-
     To use this shape information in rewrites, use the
     ``shape_of`` dictionary.