targets/maixbit: cleanup output from kflash command by removing ansi colors

Signed-off-by: deadprogram <ron@hybridgroup.com>

targets/maixbit.json

@@ -2,5 +2,5 @@
 	"inherits": ["k210"],
 	"build-tags": ["maixbit"],
 	"linkerscript": "targets/maixbit.ld",
-	"flash-command": "kflash -p {port} {bin}"
+	"flash-command": "kflash -p {port} --noansi --verbose {bin}"
 }