gcc: remove 4.4.7 (only used by avr32)

toolchain/gcc/Config.in

toolchain/gcc/Config.version

toolchain/gcc/common.mk

toolchain/gcc/patches/4.4.7/100-uclibc-conf.patch

toolchain/gcc/patches/4.4.7/301-missing-execinfo_h.patch

toolchain/gcc/patches/4.4.7/302-c99-snprintf.patch

...chain/gcc/patches/4.4.7/305-libmudflap-susv3-legacy.patch

toolchain/gcc/patches/4.4.7/810-arm-softfloat-libgcc.patch

toolchain/gcc/patches/4.4.7/820-libgcc_pic.patch

toolchain/gcc/patches/4.4.7/910-mbsd_multi.patch

toolchain/gcc/patches/4.4.7/920-specs_nonfatal_getenv.patch

toolchain/gcc/patches/4.4.7/930-avr32_support.patch

...cc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch

toolchain/gcc/patches/4.4.7/933-avr32_bug_7435.patch

toolchain/gcc/patches/4.4.7/934-avr32_bug_9675.patch

...cc/patches/4.4.7/993-arm_insn-opinit-RTX_CODE-fixup.patch

toolchain/gcc/patches/4.4.7/999-coldfire.patch