Remove restriction for 16-bit floats from semantic analysis
Remove restriction for 16-bit floats from semantic analysis

TypeInfo from tc/lang/sema.h aborts with an error when using 16-bit
floating point types. This restriction comes from the original
implementation in Tensor Comprehensions and does not apply for Teckyl.

This patch removes the check in order to enable semantic analysis for
sources using 16-bit floats.

andidr/teckyl,andidr/teckyl,andidr/teckyl