DOC? Remove plot example from clip method docstring

Author: Gui-FernandesBR

rocketpy/mathutils/function.py

@@ -1209,7 +1209,6 @@ def clip(self, y_lim):
         >>> f_clipped = f.clip([(-5, 5)])
         >>> print(f_clipped)
         Function from R1 to R1 : (x) → (y)
-        >>> f_clipped.plot()
         """
         self.__validate_clip_parameters(y_lim)