Re-enable coverage analysis (#2291)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

scripts/coverage.sh

@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit -o pipefail
-
-# Executes cleanup function at script exit.
-trap cleanup EXIT
-
-cleanup() {
-  # Delete the symlink created to the allFiredEvents file solidity-coverage creates
-  rm -f allFiredEvents
-}
-
-log() {
-  echo "$*" >&2
-}
-
-# The allFiredEvents file is created inside coverageEnv, but solidity-coverage
-# expects it to be at the top level. We create a symlink to fix this
-ln -s coverageEnv/allFiredEvents allFiredEvents
-
-OZ_TEST_ENV_COVERAGE=true npx solidity-coverage || log "Test run failed"
-
-if [ "$CI" = true ]; then
-  curl -s https://codecov.io/bash | bash -s -- -C "$CIRCLE_SHA1"
-fi