Check in cpplint in place of submodule

Summary:
We are removing private submodules from our repo.

The cpplint version we are using is based off of `d6054228db5daf0a730d627292de75ebb5e04948`

Test Plan: run `arc lint`

Reviewers: vihang, zasgar, #third_party_approvers

Reviewed By: zasgar, #third_party_approvers

Differential Revision: https://phab.corp.pixielabs.ai/D8286

GitOrigin-RevId: e788dd7

.arclint

@@ -19,7 +19,8 @@
     "(^src/ui/src/types/generated/)",
     "(c_cpp_properties.json$)",
     "(go\\.mod$)",
-    "(go\\.sum$)"
+    "(go\\.sum$)",
+    "(^third_party/cpplint/cpplint.py$)"
   ],
   "linters": {
     "build-linter": {

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "linters/cpplint"]
-	path = third_party/cpplint
-	url = git@github.com:pixie-labs/cpplint.git
 [submodule "third_party/bcc"]
 	path = third_party/bcc
 	url = git@github.com:pixie-labs/bcc.git