[cleanup] Remove unnecessary include

Change-Id: I43efddcbd381be3d61deb94515842e582069ffb9
Bug: v8:8834
Reviewed-on: https://chromium-review.googlesource.com/c/1475465
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59640}

src/inspector/DEPS

@@ -8,7 +8,6 @@ include_rules = [
   "+src/base/platform/platform.h",
   "+src/base/platform/mutex.h",
   "+src/conversions.h",
-  "+src/flags.h",
   "+src/v8memory.h",
   "+src/inspector",
   "+src/tracing",

src/inspector/v8-profiler-agent-impl.cc

@@ -8,7 +8,6 @@
 
 #include "src/base/atomicops.h"
 #include "src/debug/debug-interface.h"
-#include "src/flags.h"  // TODO(jgruber): Remove include and DEPS entry.
 #include "src/inspector/protocol/Protocol.h"
 #include "src/inspector/string-util.h"
 #include "src/inspector/v8-debugger.h"