Remove the Kasko based out of process browser hang instrumentation.

third_party/kasko/kasko.gni

Index: third_party/kasko/kasko.gni
diff --git a/third_party/kasko/kasko.gni b/third_party/kasko/kasko.gni
index 8a89f35f51b839a70ae62b6ea7ab03b17beaaf93..6e6c831dee896cff9dcb65e529de25314eb01d0c 100644
--- a/third_party/kasko/kasko.gni
+++ b/third_party/kasko/kasko.gni
@@ -4,17 +4,6 @@
 
 import("//build/config/sanitizers/sanitizers.gni")
 
-declare_args() {
-  # Enable the reporting of browser hangs with Kasko.
-  # TODO(pmonette): ensure hang reporting is disabled for syzyasan builds.
-  enable_kasko_hang_reports = false
-
-  # Enable the reporting of failed browser rendez-vous with Kasko.
-  # TODO(pmonette): ensure hang reporting is disabled for syzyasan builds.
-  enable_kasko_failed_rdv_reports = false
-}
-
 # Enable the Kasko crash reporter. Enabled by default on Syzyasan official
 # build.
-enable_kasko = (is_official_build && is_syzyasan) ||
-               enable_kasko_hang_reports || enable_kasko_failed_rdv_reports
+enable_kasko = is_official_build && is_syzyasan