[XAM/INFO] - Implement multiple functions

- Implement XamIsSystemExperienceTitleId, XamIsSystemTitleId, XamIsXbox1TitleId
- Replaced is_title_system_type
- Changed XamIsCurrentTitleDash
- Reduced magic numbers

src/xenia/kernel/kernel_state.cc

@@ -127,18 +127,6 @@ uint32_t KernelState::title_id() const {
   return 0;
 }
 
-bool KernelState::is_title_system_type(uint32_t title_id) {
-  if (!title_id) {
-    return true;
-  }
-
-  if ((title_id & 0xFF000000) == 0x58000000u) {
-    return (title_id & 0xFF0000) != 0x410000;  // if 'X' but not 'XA' (XBLA)
-  }
-
-  return (title_id >> 16) == 0xFFFE;
-}
-
 const std::unique_ptr<xam::SpaInfo> KernelState::title_xdbf() const {
   return module_xdbf(executable_module_);
 }