[ruby/bigdecimal] Remove checks for struct RRational and struct RComplex
struct RRational
struct RComplex
These are used to see only if RRATIONAL and RCOMPLEX are available, however, these two are macros and can be checked with #ifdef directly.
RRATIONAL
RCOMPLEX
#ifdef
https://github.com/ruby/bigdecimal/commit/175bbacd43
[ruby/bigdecimal] Remove checks for
struct RRationalandstruct RComplexThese are used to see only if
RRATIONALandRCOMPLEXareavailable, however, these two are macros and can be checked with
#ifdefdirectly.https://github.com/ruby/bigdecimal/commit/175bbacd43