Remove special treatments for MRB_WITHOUT_FLOAT in build scripts

mrbgems/mruby-test/mrbgem.rake

@@ -7,10 +7,6 @@ MRuby::Gem::Specification.new('mruby-test') do |spec|
   spec.add_dependency('mruby-compiler', :core => 'mruby-compiler')
 
   spec.test_rbfiles = Dir.glob("#{MRUBY_ROOT}/test/t/*.rb")
-  if build.cc.defines.flatten.include?("MRB_WITHOUT_FLOAT")
-    spec.test_rbfiles.delete("#{MRUBY_ROOT}/test/t/float.rb")
-  end
-
 
   clib = "#{build_dir}/mrbtest.c"
   mlib = clib.ext(exts.object)

src/mruby_core.rake

@@ -5,7 +5,6 @@ MRuby.each_target do
 
   objs = Dir.glob("#{current_dir}/*.c").map { |f|
     next nil if cxx_exception_enabled? and f =~ /(error|vm).c$/
-    next nil if self.cc.defines.flatten.include?("MRB_WITHOUT_FLOAT") and f =~ /fmt_fp.c$/
     objfile(f.pathmap("#{current_build_dir}/%n"))
   }.compact