Macro assembler branch8 & 16 methods vary in treatment of upper bits

Macro assembler branch8 & 16 methods vary in treatment of upper bits
https://bugs.webkit.org/show_bug.cgi?id=68301

Reviewed by Sam Weinig.

Fix for branch16 - remove it!
No performance impact.

* assembler/MacroAssembler.h:
* assembler/MacroAssemblerARM.h:
* assembler/MacroAssemblerARMv7.h:
* assembler/MacroAssemblerMIPS.h:
* assembler/MacroAssemblerSH4.h:
* assembler/MacroAssemblerX86Common.h:
* yarr/YarrJIT.cpp:
(JSC::Yarr::YarrGenerator::jumpIfCharNotEquals):
(JSC::Yarr::YarrGenerator::generatePatternCharacterOnce):
(JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
(JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
(JSC::Yarr::YarrGenerator::backtrackPatternCharacterNonGreedy):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96169 268f45cc-cd09-0410-ab3c-d52691b4dbfc