tricium.config: delete unused file

The service has been turned down, so no need for the config anymore.

Change-Id: Ie7108b2be26e437cdb631e78333d6fb708c815b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/+/7205555
Reviewed-by: Yiwei Zhang <yiwzhang@google.com>

tricium.config

diff --git a/tricium.config b/tricium.config
deleted file mode 100644
index 5d4e133..0000000
--- a/tricium.config
+++ /dev/null
@@ -1,2 +0,0 @@
-[host]
-	tricium = tricium-prod.appspot.com