staging: r8188eu: remove get_fwstate

The get_fwstate function is not used. Remove it.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20221106124901.720785-8-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_mlme.h

@@ -443,11 +443,6 @@ static inline bool check_fwstate(struct mlme_priv *pmlmepriv, int state)
 	return false;
 }
 
-static inline int get_fwstate(struct mlme_priv *pmlmepriv)
-{
-	return pmlmepriv->fw_state;
-}
-
 /*
  * No Limit on the calling context,
  * therefore set it to be the critical section...