Revert "Evergreen: Fix sourcing javaConfig.bash for serverless"

This reverts commit 94551c7.

Author: jyemin

.evergreen/run-serverless-tests.sh

@@ -15,7 +15,6 @@ set -o errexit  # Exit the script with error if any of the commands fail
 #            Main Program                  #
 ############################################
 RELATIVE_DIR_PATH="$(dirname "${BASH_SOURCE[0]:-$0}")"
-. "${RELATIVE_DIR_PATH}/javaConfig.bash"
 
 echo "Running serverless tests with Java ${JAVA_VERSION}"