Remove bare incompletes (#11670)

stdlib/xml/dom/xmlbuilder.pyi

@@ -60,7 +60,7 @@ class DOMBuilder:
     def supportsFeature(self, name: str) -> bool: ...
     def canSetFeature(self, name: str, state: int) -> bool: ...
     # getFeature could return any attribute from an instance of `Options`
-    def getFeature(self, name: str) -> Incomplete: ...
+    def getFeature(self, name: str): ...
     def parseURI(self, uri: str) -> ExpatBuilder | ExpatBuilderNS: ...
     def parse(self, input: DOMInputSource) -> ExpatBuilder | ExpatBuilderNS: ...
     # `input` and `cnode` argtypes for `parseWithContext` are unknowable