colibri_pxa270: drop edit, elf, fpga, hush, regex et al. for space reason

With em humble DM and Kconfig migraters U-Boot binary size keeps
increasing. Drop a bunch of less needed stuff to save another precious
20+ KB.
Signed-off-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>

configs/colibri_pxa270_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_COLIBRI_PXA270=y
 # CONFIG_DISPLAY_BOARDINFO is not set
-CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="$ "
+# CONFIG_CMD_ELF is not set
 # CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
+# CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
@@ -16,5 +19,6 @@ CONFIG_CMD_FAT=y
 CONFIG_PXA_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
+# CONFIG_REGEX is not set
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set

include/configs/colibri_pxa270.h

@@ -93,8 +93,8 @@
 #define	CONFIG_SYS_MAXARGS		16
 #define	CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
 #define	CONFIG_SYS_DEVICE_NULLDEV	1
-#define	CONFIG_CMDLINE_EDITING		1
-#define	CONFIG_AUTO_COMPLETE		1
+#undef	CONFIG_CMDLINE_EDITING		/* Saves 2.5 KB */
+#undef	CONFIG_AUTO_COMPLETE		/* Saves 2.5 KB */
 
 /*
  * Clock Configuration