Deal with the node being a bad link

projects/vfs/src/python/vfs/impl.py

@@ -51,12 +51,16 @@ class Vfs(object):
 
             elif e[0] == "unlink":
                 _, dest = e
-                if dest.is_symlink():
+                # Note that a path which is a dangling symlink will NOT exist but WILL be a symlink
+                if not dest.exists() and not dest.is_symlink():
+                    return
+                # Files and dirs just unlink
+                if dest.is_symlink() or dest.is_file():
                     dest.unlink()
+                # Dirs require recursion
                 elif dest.is_dir():
                     rmtree(dest)
-                elif dest.is_file():
-                    dest.unlink()
+                # Don't succeed silently
                 else:
                     raise Exception(f"Couldn't unlink {dest}")