Reduce the size of the keymap helix:fraanrosi (#16717)

keyboards/helix/rev2/keymaps/fraanrosi/rules.mk

@@ -6,7 +6,7 @@
 #   See TOP/docs/config_options.md for more information.
 #
 SPLIT_KEYBOARD = yes
-LTO_ENABLE = no  # if firmware size over limit, try this option
+LTO_ENABLE = yes         # if firmware size over limit, try this option
 MOUSEKEY_ENABLE = yes    # Mouse keys
 EXTRAKEY_ENABLE = yes    # Audio control and System control
 # AUDIO_ENABLE = yes       # Audio output on port C6