fix(port/dwc2/usb_glue_st): set GCCFG zero in host for stm32h7rs

Signed-off-by: sakumisu <1203593632@qq.com>

port/dwc2/usb_glue_st.c

@@ -194,8 +194,6 @@ uint32_t usbh_get_dwc2_gccfg_conf(uint32_t reg_base)
     USB_OTG_GLB->GCCFG = (1 << 23);
     usb_hsphy_init(25000000U);
     return (1 << 23); /* Enable USB HS PHY USBx->GCCFG |= USB_OTG_GCCFG_PHYHSEN;*/
-#elif __has_include("stm32h7rsxx.h")
-    return (1 << 21);
 #else
     return 0;
 #endif