Remove --use-spelling-suggestions flag.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index b1c678cb5c20915a0c69c7dd1669051286a02dd2..3fb4fc8454bc925a2cad6d71ed8b89a929a3ad05 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1254,10 +1254,6 @@ const char kUnlimitedStorage[]              = "unlimited-storage";
 // testing flag.
 const char kUseSpdy[]                       = "use-spdy";
 
-// Disables use of the spelling web service and only provides suggestions.
-// This will only work if asynchronous spell checking is not disabled.
-const char kUseSpellingSuggestions[]        = "use-spelling-suggestions";
-
 // A string used to override the default user agent with a custom one.
 const char kUserAgent[]                     = "user-agent";