Remove multi-install from installer_util.

chrome/installer/util/install_util.cc

Index: chrome/installer/util/install_util.cc
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
index 17f7a102a0857512ecc4ba15b31dec2a03e6f823..dbaaf2bec161e99cc9b06d2c6c6dab978760646e 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -319,11 +319,6 @@ void InstallUtil::ResetIsPerUserInstallForTest() {
   env->UnSetVar(kEnvProgramFilesPath);
 }
 
-bool InstallUtil::IsMultiInstall(bool system_install) {
-  ProductState state;
-  return state.Initialize(system_install) && state.is_multi_install();
-}
-
 bool CheckIsChromeSxSProcess() {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   CHECK(command_line);