Remove obsolet ccs811test (included in datalogger)

src/app/ccs811test/Makefile.inc

-# vim:ft=make
-#
-# Copyright 2020 Daniel Friesel
-#
-# SPDX-License-Identifier: CC0-1.0
-
-ifdef app
-	override arch_drivers += ,i2c
-	CONFIG_driver_ccs811 = y
-	COMMON_FLAGS += -DCONFIG_driver_ccs811
-	loop = 1
-endif

src/app/ccs811test/main.cc

-/*
- * Copyright 2020 Daniel Friesel
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-#include "arch.h"
-#include "driver/gpio.h"
-#include "driver/stdout.h"
-#if defined(MULTIPASS_ARCH_HAS_I2C) && !defined(CONFIG_driver_softi2c)
-#include "driver/i2c.h"
-#else
-#include "driver/soft_i2c.h"
-#endif
-#include "driver/ccs811.h"
-
-void loop(void)
-{
-	kout << "CCS811 status is " << ccs811.check() << endl;
-}
-
-int main(void)
-{
-
-	arch.setup();
-	gpio.setup();
-	kout.setup();
-
-	if (i2c.setup() != 0) {
-		return 1;
-	}
-
-	kout << "I2C setup OK" << endl;
-
-	ccs811.init();
-
-	arch.idle_loop();
-
-	return 0;
-}