Remove flag to hide shelf alignment

ash/ash_switches.h

Index: ash/ash_switches.h
diff --git a/ash/ash_switches.h b/ash/ash_switches.h
index 80181c9a64bb688f9ac51608a12d7493de932c00..a4a455b5fa5288d5a68885c193d7b512ad0b1f74 100644
--- a/ash/ash_switches.h
+++ b/ash/ash_switches.h
@@ -72,8 +72,6 @@ ASH_EXPORT extern const char kAuraLegacyPowerButton[];
 #if defined(OS_WIN)
 ASH_EXPORT extern const char kForceAshToDesktop[];
 #endif
-ASH_EXPORT extern const char kShowShelfAlignmentMenu[];
-ASH_EXPORT extern const char kHideShelfAlignmentMenu[];
 
 // Returns true if the alternate visual style for the caption buttons (minimize,
 // maximize, restore, close) should be used.
@@ -89,9 +87,6 @@ ASH_EXPORT bool UseDragOffShelf();
 // immersive fullscreen via <F4>.
 ASH_EXPORT bool UseImmersiveFullscreenForAllWindows();
 
-// Returns true if side shelf alignment is enabled.
-ASH_EXPORT bool ShowShelfAlignmentMenu();
-
 // Returns true if multiple user icons are allowed in the tray.
 ASH_EXPORT bool UseMultiUserTray();