board: toradex: colibri_vf: unset CONFIG_CMDLINE_EDITING

Unset CONFIG_CMDLINE_EDITING saving precious 4 Kb on boards with tough
size restrictions.
Signed-off-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>

configs/colibri_vf_defconfig

@@ -14,6 +14,7 @@ CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_ARCH_MISC_INIT=y
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_HUSH_PARSER=y
+# CONFIG_CMDLINE_EDITING is not set
 # CONFIG_AUTO_COMPLETE is not set
 CONFIG_SYS_PROMPT="Colibri VFxx # "
 CONFIG_CMD_BOOTZ=y