Revert of Introduce mkgrokdump to update tools/v8heapconst.py.

test/BUILD.gn

Index: test/BUILD.gn
diff --git a/test/BUILD.gn b/test/BUILD.gn
index 440f34054538a3500827feac2332938fadeb2989..519c1d3a0e1e62a25bf34fe49b4664fc390e2db8 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -11,7 +11,6 @@
   deps = [
     ":default_tests",
     "inspector:inspector-test",
-    "mkgrokdump:mkgrokdump",
   ]
 
   if (host_os != "mac" || !is_android) {
@@ -49,7 +48,6 @@
       ":intl_run",
       ":message_run",
       ":mjsunit_run",
-      ":mkgrokdump_run",
       ":preparser_run",
       ":unittests_run",
     ]
@@ -166,14 +164,6 @@
   isolate = "mjsunit/mjsunit.isolate"
 }
 
-v8_isolate_run("mkgrokdump") {
-  deps = [
-    "mkgrokdump:mkgrokdump",
-  ]
-
-  isolate = "mkgrokdump/mkgrokdump.isolate"
-}
-
 v8_isolate_run("mozilla") {
   deps = [
     "..:d8_run",