brcmsmac: update comment to reflect the code

The brcms_attach function is defined as static but the comment is
saying that it should not be static or gcc will issue a warning.
I believe we can remove the comment as I don't se a problem with
this function being defined as static.
Signed-off-by: NEmil Goode <emilgoode@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c

@@ -1092,12 +1092,6 @@ static int ieee_hw_init(struct ieee80211_hw *hw)
  * Attach to the WL device identified by vendor and device parameters.
  * regs is a host accessible memory address pointing to WL device registers.
  *
- * brcms_attach is not defined as static because in the case where no bus
- * is defined, wl_attach will never be called, and thus, gcc will issue
- * a warning that this function is defined but not used if we declare
- * it as static.
- *
- *
  * is called in brcms_bcma_probe() context, therefore no locking required.
  */
 static struct brcms_info *brcms_attach(struct bcma_device *pdev)