esp32s3: remove flash size warning while working with builtin usb-jtag

tcl/board/esp32s3-builtin.cfg

@@ -10,10 +10,3 @@ source [find interface/esp_usb_jtag.cfg]
 # Source the ESP32-S3 configuration file
 source [find target/esp32s3.cfg]
 
-# Currently builtin USB-JTAG stucks during flash probing
-# TODO: Remove code below when problem is above is fixed
-set flash_list_size [llength [flash list]]
-if { $flash_list_size != 0} {
-    echo "WARNING: ESP32-S3 target may experience problems when accessing flash via builtin USB-JTAG adapter!"
-    echo "WARNING: It is recommended to disable flash support by running OpenOCD with `-c 'set ESP_FLASH_SIZE 0'` or use external JTAG adapter."
-}