[debugger] remove deprecated api functions.

include/v8-debug.h

Index: include/v8-debug.h
diff --git a/include/v8-debug.h b/include/v8-debug.h
index 6520cbe0cda70d8302784d5bce75e4e6b8c8d7e8..6385a31d85e80f53e516b770812e6b0385ed5fe7 100644
--- a/include/v8-debug.h
+++ b/include/v8-debug.h
@@ -157,9 +157,6 @@ class V8_EXPORT Debug {
 
   static bool SetDebugEventListener(Isolate* isolate, EventCallback that,
                                     Local<Value> data = Local<Value>());
-  V8_DEPRECATED("Use version with an Isolate",
-                static bool SetDebugEventListener(
-                    EventCallback that, Local<Value> data = Local<Value>()));
 
   // Schedule a debugger break to happen when JavaScript code is run
   // in the given isolate.
@@ -174,8 +171,6 @@ class V8_EXPORT Debug {
 
   // Message based interface. The message protocol is JSON.
   static void SetMessageHandler(Isolate* isolate, MessageHandler handler);
-  V8_DEPRECATED("Use version with an Isolate",
-                static void SetMessageHandler(MessageHandler handler));
 
   static void SendCommand(Isolate* isolate,
                           const uint16_t* command, int length,
@@ -199,9 +194,6 @@ class V8_EXPORT Debug {
   *   }
   * \endcode
   */
-  static V8_DEPRECATED("Use maybe version",
-                       Local<Value> Call(v8::Local<v8::Function> fun,
-                                         Local<Value> data = Local<Value>()));
   // TODO(dcarney): data arg should be a MaybeLocal
   static MaybeLocal<Value> Call(Local<Context> context,
                                 v8::Local<v8::Function> fun,
@@ -210,8 +202,6 @@ class V8_EXPORT Debug {
   /**
    * Returns a mirror object for the given object.
    */
-  static V8_DEPRECATED("Use maybe version",
-                       Local<Value> GetMirror(v8::Local<v8::Value> obj));
   static MaybeLocal<Value> GetMirror(Local<Context> context,
                                      v8::Local<v8::Value> obj);
 
@@ -247,8 +237,6 @@ class V8_EXPORT Debug {
    * of this method.
    */
   static void ProcessDebugMessages(Isolate* isolate);
-  V8_DEPRECATED("Use version with an Isolate",
-                static void ProcessDebugMessages());
 
   /**
    * Debugger is running in its own context which is entered while debugger
@@ -258,8 +246,6 @@ class V8_EXPORT Debug {
    * least one DebugEventListener or MessageHandler is set.
    */
   static Local<Context> GetDebugContext(Isolate* isolate);
-  V8_DEPRECATED("Use version with an Isolate",
-                static Local<Context> GetDebugContext());
 
   /**
    * While in the debug context, this method returns the top-most non-debug