Revert "Revert "toolchain/binutils: remove versions 2.29.1 and 2.31.1""
This reverts commit 2abb9552. Support for older binutils had been added back to make IOWRT MT7621 U-Boot port build again (ramips, EX400 device). Since support for the target has been dropped, we can revert this patch.
Signed-off-by: Andreas Gnau andreas.gnau@iopsys.eu