Core/ConfigManager: Don't set JITFollowBranch

We don't want to write this setting to disk, as SConfig has problems
with leaking settings changed by GameINI into the base configs. The
result of this is that if someone plays an N64 VC game (or other game
where we disable this setting) the branch following option can get
unintentionally disabled globally, which will reduce performance in
many games and cause NetPlay to desync with users who still have it
enabled.

Source/Core/Core/ConfigManager.cpp

@@ -219,7 +219,6 @@ void SConfig::SaveCoreSettings(IniFile& ini)
   core->Set("SkipIPL", bHLE_BS2);
   core->Set("TimingVariance", iTimingVariance);
   core->Set("CPUCore", cpu_core);
-  core->Set("JITFollowBranch", bJITFollowBranch);
   core->Set("Fastmem", bFastmem);
   core->Set("CPUThread", bCPUThread);
   core->Set("DSPHLE", bDSPHLE);