Properly ingore unused import lint (#2343)

Summary:
Pull Request resolved: #2343

#2339 attempted to ignore an unused import lint, but did so incorrectly. This fixed that.

Reviewed By: saitcakmak

Differential Revision: D57280457

fbshipit-source-id: be1834c55eb24647929ce935d2f1b4af31d6fa4d

Author: Balandat

botorch/__init__.py

@@ -28,7 +28,8 @@
 try:
     # Marking this as a manual import to avoid autodeps complaints
     # due to imports from non-existent file.
-    from botorch.version import version as __version__  # @manual  # noqa: F401
+    # lint-ignore: UnusedImportsRule
+    from botorch.version import version as __version__  # @manual
 except Exception:  # pragma: no cover
     __version__ = "Unknown"