cmath (fpclassify, [...]): Remove spurious duplicate definition added in the last commit.

2010-11-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/c_global/cmath (fpclassify, isfinite, isinf, isnan,
	isnormal, signbit, isgreater, isgreaterequal, isless, islessequal,
	islessgreater, isunordered): Remove spurious duplicate definition
	added in the last commit.

	* include/tr1/cmath: Remove tr1_impl leftover macro.

From-SVN: r166228