[inspector] removed unused code from JavaScriptSourceFrame

src/inspector/java-script-call-frame.cc

Index: src/inspector/java-script-call-frame.cc
diff --git a/src/inspector/java-script-call-frame.cc b/src/inspector/java-script-call-frame.cc
index f9d0585a8e43597b56fe3fb9bd990d6ed92de65c..aba410da6a32b9d5c1b15c21541cf04c334a7d62 100644
--- a/src/inspector/java-script-call-frame.cc
+++ b/src/inspector/java-script-call-frame.cc
@@ -61,18 +61,6 @@ int JavaScriptCallFrame::callV8FunctionReturnInt(const char* name) const {
   return result.As<v8::Int32>()->Value();
 }
 
-int JavaScriptCallFrame::sourceID() const {
-  return callV8FunctionReturnInt("sourceID");
-}
-
-int JavaScriptCallFrame::line() const {
-  return callV8FunctionReturnInt("line");
-}
-
-int JavaScriptCallFrame::column() const {
-  return callV8FunctionReturnInt("column");
-}
-
 int JavaScriptCallFrame::contextId() const {
   return callV8FunctionReturnInt("contextId");
 }