Remove unused flag 'kDisableSmartVirtualKeyboard' and associated code.

ui/keyboard/keyboard_util.cc

Index: ui/keyboard/keyboard_util.cc
diff --git a/ui/keyboard/keyboard_util.cc b/ui/keyboard/keyboard_util.cc
index c80d9f1a03c553aca883d81510a278f80f2f623c..6c6191de518ab1b27b80c3509ce11148cd727732 100644
--- a/ui/keyboard/keyboard_util.cc
+++ b/ui/keyboard/keyboard_util.cc
@@ -210,11 +210,6 @@ bool IsGestureEditingEnabled() {
       switches::kDisableGestureEditing);
 }
 
-bool IsSmartDeployEnabled() {
-  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableSmartVirtualKeyboard);
-}
-
 bool IsVoiceInputEnabled() {
   return !g_keyboard_restricted &&
          !base::CommandLine::ForCurrentProcess()->HasSwitch(