glibc: remove bad patch snippet that eglibc forward ported

The s_sin.c patch undoes some code changes in glibc itself, these changes have nothing to
do with the option groups and I suspect crept in as part of the initial conversion.  Undoing
this patch also fixes a test failure in test-double and test-idouble.

[YOCTO #6808]

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>