fix e2e-tests docker image (#890)

Author: defbin

e2e-tests/docker/tests.dockerfile

@@ -2,7 +2,6 @@ FROM oraclelinux:8 AS base-build
 WORKDIR /build
 RUN dnf update && dnf install golang
 
-FROM pbm:build-base AS pbm-build
 ARG TESTS_BCP_TYPE
 ENV TESTS_BCP_TYPE=${TESTS_BCP_TYPE}