PRESUBMIT: Update PyLint blacklist

The PyLint was unnecessary slow due to some directories
that don't belong to our repo.

TESTED=Passing 'git cl presubmit' on Windows.
NOTRY=True

Review URL: https://codereview.webrtc.org/1858633002

Cr-Commit-Position: refs/heads/master@{#12217}
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index ee122c5..9625f65 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -414,17 +414,17 @@
                   r'^build[\\\/].*\.py$',
                   r'^buildtools[\\\/].*\.py$',
                   r'^chromium[\\\/].*\.py$',
-                  r'^google_apis[\\\/].*\.py$',
-                  r'^net.*[\\\/].*\.py$',
+                  r'^mojo.*[\\\/].*\.py$',
                   r'^out.*[\\\/].*\.py$',
                   r'^testing[\\\/].*\.py$',
                   r'^third_party[\\\/].*\.py$',
-                  r'^tools[\\\/]find_depot_tools.py$',
                   r'^tools[\\\/]clang[\\\/].*\.py$',
                   r'^tools[\\\/]generate_library_loader[\\\/].*\.py$',
+                  r'^tools[\\\/]generate_stubs[\\\/].*\.py$',
                   r'^tools[\\\/]gn[\\\/].*\.py$',
                   r'^tools[\\\/]gyp[\\\/].*\.py$',
                   r'^tools[\\\/]isolate_driver.py$',
+                  r'^tools[\\\/]mb[\\\/].*\.py$',
                   r'^tools[\\\/]protoc_wrapper[\\\/].*\.py$',
                   r'^tools[\\\/]python[\\\/].*\.py$',
                   r'^tools[\\\/]python_charts[\\\/]data[\\\/].*\.py$',