Remove the PlzNavigate browser_tests filter as all tests are now passing.

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index 5cb805dcce666146c9c563da63dc78b34c4d783d..9eb52c84031a86983d1f039025732eb34c1a0f83 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -1694,7 +1694,6 @@
       {
         "args": [
           "--enable-browser-side-navigation",
-          "--test-launcher-filter-file=../../testing/buildbot/filters/browser-side-navigation.linux.browser_tests.filter",
           "--test-launcher-retry-limit=6"
         ],
         "swarming": {
@@ -1735,14 +1734,6 @@
     "scripts": [
       {
         "args": [
-          "browser_tests",
-          "../../testing/buildbot/filters/browser-side-navigation.linux.browser_tests.filter"
-        ],
-        "name": "count_filtered_tests_browser_tests",
-        "script": "count_filtered_tests.py"
-      },
-      {
-        "args": [
           "content_browsertests",
           "../../testing/buildbot/filters/browser-side-navigation.linux.content_browsertests.filter"
         ],