toolchain/gcc/4.2.4: Remove libstdc++ uClibc locale patches

These patches do not build with more recent versions of uClibc
going back as far as at least 2008. More recent compiler versions
seem to do fine without these patches, so lets remove them so
libstdc++ locale support will actually build for gcc 4.2.4.

Signed-off-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>