diff --git a/hack/project-coverage.sh b/hack/project-coverage.sh
deleted file mode 100755
index 4b0bac1ac8c3..000000000000
--- a/hack/project-coverage.sh
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/bin/bash
-
-# Copyright 2018 The Knative Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# This script is triggered by prow jobs (pre-submit and post-submit) to collect test coverage 
-# profiles and load them, together with some meta-data, which to be explained later. 
-# Each run of this script will create/modify 3 file in internal prow's GCS bucket:
-#  1. create the coverage profile
-#  2. create the a file that record the commit ID of the latest build and the time this script is 
-#     run. If the script is triggered by pre-submit, then there is an additional field that records
-#     the master commit ID of the pull. Note that the master is moving, which means each build may 
-#     have a new master, even if there is no new commit in the PR
-#  3. update the history file that contains all previous heads in chronological order
-
-# The following env vars are passed from prow (described in 
-# https://github.com/kubernetes/test-infra/blob/master/prow/README.md):
-# PULL_PULL_SHA, PULL_NUMBER, PULL_BASE_SHA
-
-set -o errexit
-set -o pipefail
-
-COVERAGE_FILE_NAME="coverage_profile.txt"
-HEAD_FILE_NAME="head.txt"
-HIST_HEADS_FILE_NAME="historical_heads.txt"
-SERVING_ROOT=$(dirname ${BASH_SOURCE})/..
-
-if [[ -v PULL_PULL_SHA ]]; then 
-  echo "Process pull build..."
-  object_file_name=$PULL_PULL_SHA
-  pr=$PULL_NUMBER
-else
-  # post-submits (merging into master) has no PULL_PULL_SHA, 
-  # the commit id is stored in PULL_BASE_SHA instead
-  echo "Processing master commit..."
-  if [[ -v PULL_BASE_SHA ]]; then
-    object_file_name=$PULL_BASE_SHA
-    pr=master
-  else
-    echo "Error: None of PULL_PULL_SHA and PULL_BASE_SHA is set"
-    exit 1
-  fi
-fi
-
-case $pr in 
-  master) folder="master";;
-  *) folder="pulls/$pr";;
-esac
-
-gcs_pr_dir="gs://gke-prow/pr-logs/coverage/knative-serving/${folder}/"
-gcs_profile_dir=${gcs_pr_dir}profiles/
-gcs_profile_path=${gcs_profile_dir}${object_file_name}
-
-
-cd ${SERVING_ROOT}/pkg
-
-# Generate the coverage profile for all tests, and store it in the GCS bucket.
-go test ./... -covermode=count -coverprofile $COVERAGE_FILE_NAME
-gsutil cp -a public-read $COVERAGE_FILE_NAME $gcs_profile_path/$COVERAGE_FILE_NAME
-echo "Test coverage profiling completed successfully"
-rm $COVERAGE_FILE_NAME
-
-# Record the commit id and master commit id of the latest build
-commit_record="$PULL_PULL_SHA $PULL_BASE_SHA `date +%s%N`"
-echo ${commit_record} > $HEAD_FILE_NAME
-echo "Uploading head record to GCS..."
-gsutil cp -a public-read $HEAD_FILE_NAME ${gcs_pr_dir}${HEAD_FILE_NAME}
-echo "Finished uploading head record to GCS..."
-
-# Append the commit id and master commit id of the latest build to the end of the history
-hist_heads_path=${gcs_pr_dir}$HIST_HEADS_FILE_NAME # GCS path to store heads history
-
-is_hist_empty=0 # 1 iff the history file is not found in GCS bucket
-(gsutil -q stat $hist_heads_path) || is_hist_empty=1
-if [ $is_hist_empty -eq 1 ]; then
-  echo "Creating new history file"
-  gsutil cp -a public-read $HEAD_FILE_NAME $hist_heads_path
-else
-  # download the existing version, update locally and then upload to refresh
-  echo "Appending new record to history file"
-  gsutil cp $hist_heads_path $HIST_HEADS_FILE_NAME
-  echo ${commit_record} >> $HIST_HEADS_FILE_NAME
-  gsutil cp -a public-read $HIST_HEADS_FILE_NAME $hist_heads_path
-  rm $HIST_HEADS_FILE_NAME
-fi
-rm $HEAD_FILE_NAME
-echo "Coverage related GCS uploading completed"