Delete dead code for CurrentlyOpenTabs

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index ea48ff5681c58f53dee956d1e16b87bb38da9f49..9f7f53c5ec7da62f6f02e9955c795acd4befdfb7 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1522,11 +1522,6 @@ const char kDisablePluginFinder[] = "plugins.disable_plugin_finder";
 // Customized app page names that appear on the New Tab Page.
 const char kNtpAppPageNames[] = "ntp.app_page_names";
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
-// Keeps track of currently open tabs collapsed state in the Other Devices menu.
-const char kNtpCollapsedCurrentlyOpenTabs[] = "ntp.collapsed_open_tabs";
-#endif
-
 // Keeps track of which sessions are collapsed in the Other Devices menu.
 const char kNtpCollapsedForeignSessions[] = "ntp.collapsed_foreign_sessions";