toolchain/glibc: remove obsolete versions

package/libs/toolchain/Makefile

package/utils/lua/Makefile

toolchain/glibc/Config.in

toolchain/glibc/Config.version

toolchain/glibc/common.mk

toolchain/glibc/config/Config.in

toolchain/glibc/patches/2.15/001-fix_autoconf_macro.patch

toolchain/glibc/patches/2.15/005-versions.patch

...c/patches/2.15/050-all_glibc-2.14-leak-revert-crash.patch

toolchain/glibc/patches/2.15/100-fix_cross_rpcgen.patch

toolchain/glibc/patches/2.15/110-fix_cross_zic.patch

toolchain/glibc/patches/2.15/120-use_host_cflags.patch

toolchain/glibc/patches/2.15/200-add-dl-search-paths.patch

toolchain/glibc/patches/2.19/100-fix_cross_rpcgen.patch

toolchain/glibc/patches/2.19/200-add-dl-search-paths.patch

toolchain/glibc/patches/2.19/300-require-autoconf-2.69.patch

toolchain/glibc/patches/2.21/100-fix_cross_rpcgen.patch

toolchain/glibc/patches/2.21/200-add-dl-search-paths.patch