Simplify wave getparams stub

Author: JelleZijlstra

stdlib/wave.pyi

@@ -81,10 +81,11 @@ class Wave_write:
         def setparams(
             self, params: _wave_params | tuple[int, int, int, int, str, str] | tuple[int, int, int, int, str, str, int]
         ) -> None: ...
-        def getparams(self) -> _wave_params: ...
     else:
         def setparams(self, params: _wave_params | tuple[int, int, int, int, str, str]) -> None: ...
-        def getparams(self) -> _wave_params: ...
+
+    def getparams(self) -> _wave_params: ...
+
     if sys.version_info >= (3, 15):
         pass
     elif sys.version_info >= (3, 13):