ANDROID: configs: remove unused configs

CONFIG_IP6_NF_MANGLE=y

CONFIG_IP6_NF_RAW=y

CONFIG_IP6_NF_TARGET_REJECT=y

CONFIG_IP6_NF_TARGET_REJECT_SKERR=y

CONFIG_IPV6=y

CONFIG_IPV6_MIP6=y

CONFIG_IPV6_MULTIPLE_TABLES=y

CONFIG_IP_NF_TARGET_NETMAP=y

CONFIG_IP_NF_TARGET_REDIRECT=y

CONFIG_IP_NF_TARGET_REJECT=y

CONFIG_IP_NF_TARGET_REJECT_SKERR=y

CONFIG_NET=y

CONFIG_NETDEVICES=y

CONFIG_NETFILTER=y

CONFIG_PPP_MPPE=y

CONFIG_PREEMPT=y

CONFIG_QUOTA=y

CONFIG_RESOURCE_COUNTERS=y

CONFIG_RTC_CLASS=y

CONFIG_RT_GROUP_SCHED=y

CONFIG_SECURITY=y

CONFIG_TABLET_USB_GTCO=y

CONFIG_TABLET_USB_HANWANG=y

CONFIG_TABLET_USB_KBTAB=y

CONFIG_TABLET_USB_WACOM=y

CONFIG_TASKSTATS=y

CONFIG_TASK_DELAY_ACCT=y

CONFIG_TASK_IO_ACCOUNTING=y