cmd/bent: minor cleanup in cronjob.sh

Change-Id: Ifec84d76ddacbe460237188328e3479a3304168c
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/373134
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: David Chase <drchase@google.com>
diff --git a/cmd/bent/scripts/cronjob.sh b/cmd/bent/scripts/cronjob.sh
index 275ed63..3fc2e16 100755
--- a/cmd/bent/scripts/cronjob.sh
+++ b/cmd/bent/scripts/cronjob.sh
@@ -103,8 +103,6 @@
 
 echo "suite: ${SUITE}" >> ${STAMP}
 append bentstamp
-append tip
-append base
 # new stuff for better benchmarking
 append numerator_branch
 append numerator_hash
@@ -152,8 +150,6 @@
 echo "suite: ${SUITE}-Nl" >> ${STAMP}
 
 append bentstamp
-append tip
-append base
 # new stuff for better benchmarking
 append numerator_branch
 append numerator_hash
@@ -191,8 +187,6 @@
 export STAMP
 echo "suite: ${SUITE}-l" >> ${STAMP}
 append bentstamp
-append tip
-append base
 # new stuff for better benchmarking
 append numerator_branch
 append numerator_hash