inspector: build file cleanup

Remove obsolete build file entries.

Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
PR-URL: #8753

deps/v8_inspector/third_party/v8_inspector/platform/v8_inspector/v8_inspector.gyp

@@ -262,7 +262,6 @@
         'InspectedContext.h',
         'JavaScriptCallFrame.cpp',
         'JavaScriptCallFrame.h',
-        'MuteConsoleScope.h',
         'PlatformSTL.h',
         'RemoteObjectId.cpp',
         'RemoteObjectId.h',
@@ -307,11 +306,9 @@
         'V8StringUtil.h',
         'V8ValueCopier.cpp',
         'V8ValueCopier.h',
-        'public/V8EventListenerInfo.h',
         'public/V8ContextInfo.h',
         'public/V8Inspector.h',
         'public/V8InspectorClient.h',
-        'public/V8HeapProfilerAgent.h',
         'public/V8InspectorSession.h',
         'public/V8StackTrace.h',