usb: gadget: composite: cleanup function config_ep_by_speed_and_alt()

When call this function, gadget already have working speed, if it is
USB_SPEED_SUPER_PLUS, in theroy gadget_is_superspeed_plus() checking
should be true, so there is no need to call it. it is same for other
working speed.

Remove all gadget_is_{*}speed_plus() API call to clean it up.
Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/20230803091053.9714-7-quic_linyyuan@quicinc.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/composite.c

@@ -170,33 +170,27 @@ int config_ep_by_speed_and_alt(struct usb_gadget *g,
 	/* select desired speed */
 	switch (g->speed) {
 	case USB_SPEED_SUPER_PLUS:
-		if (gadget_is_superspeed_plus(g)) {
-			if (f->ssp_descriptors) {
-				speed_desc = f->ssp_descriptors;
-				want_comp_desc = 1;
-				break;
-			}
-			incomplete_desc = true;
+		if (f->ssp_descriptors) {
+			speed_desc = f->ssp_descriptors;
+			want_comp_desc = 1;
+			break;
 		}
+		incomplete_desc = true;
 		fallthrough;
 	case USB_SPEED_SUPER:
-		if (gadget_is_superspeed(g)) {
-			if (f->ss_descriptors) {
-				speed_desc = f->ss_descriptors;
-				want_comp_desc = 1;
-				break;
-			}
-			incomplete_desc = true;
+		if (f->ss_descriptors) {
+			speed_desc = f->ss_descriptors;
+			want_comp_desc = 1;
+			break;
 		}
+		incomplete_desc = true;
 		fallthrough;
 	case USB_SPEED_HIGH:
-		if (gadget_is_dualspeed(g)) {
-			if (f->hs_descriptors) {
-				speed_desc = f->hs_descriptors;
-				break;
-			}
-			incomplete_desc = true;
+		if (f->hs_descriptors) {
+			speed_desc = f->hs_descriptors;
+			break;
 		}
+		incomplete_desc = true;
 		fallthrough;
 	default:
 		speed_desc = f->fs_descriptors;