gcc: drop version 4.8-linaro

toolchain/gcc/Config.in

toolchain/gcc/Config.version

toolchain/gcc/common.mk

.../patches/4.8-linaro/001-revert_register_mode_search.patch

toolchain/gcc/patches/4.8-linaro/002-weak_data_fix.patch

...in/gcc/patches/4.8-linaro/003-universal_initializer.patch

toolchain/gcc/patches/4.8-linaro/004-case_insensitive.patch

toolchain/gcc/patches/4.8-linaro/010-documentation.patch

toolchain/gcc/patches/4.8-linaro/020-no-plt-backport.patch

toolchain/gcc/patches/4.8-linaro/100-uclibc-conf.patch

toolchain/gcc/patches/4.8-linaro/200-musl_config.patch

toolchain/gcc/patches/4.8-linaro/201-musl_arm.patch

toolchain/gcc/patches/4.8-linaro/202-musl_mips.patch

toolchain/gcc/patches/4.8-linaro/203-musl_powerpc.patch

toolchain/gcc/patches/4.8-linaro/204-musl_sh.patch

toolchain/gcc/patches/4.8-linaro/205-musl_x86.patch

toolchain/gcc/patches/4.8-linaro/206-musl_aarch64.patch

toolchain/gcc/patches/4.8-linaro/207-musl_fixincludes.patch

toolchain/gcc/patches/4.8-linaro/208-musl_gomp.patch

toolchain/gcc/patches/4.8-linaro/209-musl_libstdc++.patch