Remove QSPI for Future targets

Author: linlingao

targets/TARGET_Cypress/TARGET_PSOC6/mbed_overrides.c

@@ -94,18 +94,15 @@ void mbed_sdk_init(void)
     us_ticker_init();
 #endif
 
-#if defined(CYBSP_ENABLE_FLASH_STORAGE)
+#if MBED_CONF_TARGET_XIP_ENABLE
     /* The linker script allows storing data in external memory, if needed, enable access to that memory. */
     cybsp_serial_flash_init();
     cybsp_serial_flash_enable_xip(true);
-#endif /* defined(CYBSP_ENABLE_FLASH_STORAGE) */
+#endif
 
     /* Enable global interrupts (disabled in CM4 startup assembly) */
     __enable_irq();
 #endif
-#if MBED_CONF_TARGET_XIP_ENABLE
-    qspi_xip_start();
-#endif
 
 #if defined (CY_CFG_PWR_SYS_IDLE_MODE)
     /* Configure the lowest power state the system is allowed to enter