WATCHLISTS: Remove obsolete chrome/browser/ui/input_method path.

Everything at this path was deleted at https://crrev.com/c/2198861.

Change-Id: I8eb31f7d614935fc39b68527e73a7f4c72bb32d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2230434Reviewed-by: Keith Lee <keithlee@chromium.org>
Commit-Queue: Keith Lee <keithlee@chromium.org>
Auto-Submit: Bao-Duy Tran <tranbaoduy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776325}

WATCHLISTS

@@ -1818,8 +1818,7 @@
                   '|chromeos/components/tether/'
     },
     'textinput': {
-      'filepath': 'chrome/browser/ui/input_method'\
-                  '|content/browser/renderer_host/render_widget_host_view'\
+      'filepath': 'content/browser/renderer_host/render_widget_host_view'\
                   '|content/browser/renderer_host/text_input'\
                   '|ui/base/ime/'\
                   '|ui/views/controls/textfield/'\