rpi-config: Reduce config.txt size

Remove some comments to reduce config.txt file size to avoid file
corruption and make sure Raspberry Pi 5 will boot successfully.

The issue with large config.txt has been reported to related
projects:
https://github.com/raspberrypi/firmware/issues/1848
https://github.com/Evilpaul/RPi-config/issues/9

This work was sponsored by GOVCERT.LU.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

recipes-bsp/bootfiles/rpi-config_git.bb

@@ -317,6 +317,13 @@ do_deploy() {
         echo "# Enable One-Wire Interface" >> $CONFIG
         echo "dtoverlay=w1-gpio" >> $CONFIG
     fi
+
+    # Reduce config.txt file size to avoid corruption and
+    # to boot successfully Raspberry Pi 5. The issue has
+    # been reported to related projects:
+    # https://github.com/raspberrypi/firmware/issues/1848
+    # https://github.com/Evilpaul/RPi-config/issues/9
+    sed -i '/^##/d' $CONFIG
 }
 
 do_deploy:append:raspberrypi3-64() {