i2c: Disable i2c app for qemu

As up_i2cinitialize only available for artik

Relate-to: https://travis-ci.org/Samsung/TizenRT/jobs/453097081
Forwarded: #2439
Change-Id: I51ff1fe3d83bad34a59a0fb3adddcb087be814b2
Signed-off-by: Philippe Coval <p.coval@samsung.com>

build/configs/qemu/build_test/defconfig

@@ -1188,13 +1188,7 @@ CONFIG_TASH_CMDTASK_PRIORITY=100
 # CONFIG_SYSTEM_CUTERM is not set
 # CONFIG_SYSTEM_FLASH_ERASEALL is not set
 # CONFIG_SYSTEM_FOTA_HAL is not set
-CONFIG_SYSTEM_I2CTOOL=y
-CONFIG_I2CTOOL_MINBUS=0
-CONFIG_I2CTOOL_MAXBUS=3
-CONFIG_I2CTOOL_MINADDR=0x03
-CONFIG_I2CTOOL_MAXADDR=0x77
-CONFIG_I2CTOOL_MAXREGADDR=0xff
-CONFIG_I2CTOOL_DEFFREQ=400000
+# CONFIG_SYSTEM_I2CTOOL is not set
 # CONFIG_SYSTEM_INIFILE is not set
 CONFIG_SYSTEM_PREAPP_INIT=y
 CONFIG_SYSTEM_PREAPP_STACKSIZE=2048