Disable the roll of 'android_ndk'

Chromium is being updated to 'android_toolchain', which means the
'android_ndk' DEPS is no longer present. Remove it from the roller until
the transition is complete, then it can be removed from this script
entirely.

Bug: chromium:1448383
Test: Verified fix in libyuv, which uses identical roller script.
Change-Id: I0b07aefaa8edf0a8f87b2accfbcffd4a2307f9f4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/308160
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Auto-Submit: Prashanth Swaminathan <prashanthsw@google.com>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40243}
diff --git a/tools_webrtc/autoroller/roll_deps.py b/tools_webrtc/autoroller/roll_deps.py
index cdb7432..a20c6c9 100755
--- a/tools_webrtc/autoroller/roll_deps.py
+++ b/tools_webrtc/autoroller/roll_deps.py
@@ -32,6 +32,8 @@
 # Skip these dependencies (list without solution name prefix).
 DONT_AUTOROLL_THESE = [
     'src/examples/androidtests/third_party/gradle',
+    # Disable the roll of 'android_ndk' as it won't appear in chromium DEPS.
+    'src/third_party/android_ndk',
     'src/third_party/mockito/src',
 ]