Merge bitcoin#20315: travis: Remove s390x build

fa2c3c0 ci: Set LC_ALL=C to allow running the s390x tests in qemu (MarcoFalke)
fac0517 travis: Remove s390x build (MarcoFalke)

Pull request description:

  This has been discussed in the last meeting.

  Refer to the commit body for more details.

Top commit has no ACKs.

Tree-SHA512: 8e0455286ce41c95ed2e5eb624ac534251bb4a321f13d26d14356497e0c39f841372e166373ffd4a0a9fa379636c2cfb535bd92534fff427cdcb827354e66b6c

.travis.yml

@@ -72,13 +72,6 @@ jobs:
         FILE_ENV="./ci/test/00_setup_env_arm.sh"
         QEMU_USER_CMD=""
 
-    - stage: test
-      name: 'S390x  [GOAL: install]  [buster]  [unit tests, functional tests]'
-      arch: s390x  # Can disable QEMU_USER_CMD and run the tests natively without qemu
-      env: >-
-        FILE_ENV="./ci/test/00_setup_env_s390x.sh"
-        QEMU_USER_CMD=""
-
     - stage: test
       name: 'Win64  [GOAL: deploy]  [unit tests, no gui, no boost::process, no functional tests]'
       env: >-

ci/test/00_setup_env_s390x.sh

@@ -20,6 +20,7 @@ fi
 export CONTAINER_NAME=ci_s390x
 export DOCKER_NAME_TAG="debian:buster"
 export RUN_UNIT_TESTS=true
+export TEST_RUNNER_ENV="LC_ALL=C"
 export RUN_FUNCTIONAL_TESTS=true
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-reduce-exports --with-incompatible-bdb --with-boost-process"

ci/test/06_script_b.sh

@@ -23,13 +23,13 @@ fi
 
 if [ "$RUN_UNIT_TESTS" = "true" ]; then
   BEGIN_FOLD unit-tests
-  DOCKER_EXEC DIR_UNIT_TEST_DATA=${DIR_UNIT_TEST_DATA} LD_LIBRARY_PATH=$DEPENDS_DIR/$HOST/lib make $MAKEJOBS check VERBOSE=1
+  DOCKER_EXEC ${TEST_RUNNER_ENV} DIR_UNIT_TEST_DATA=${DIR_UNIT_TEST_DATA} LD_LIBRARY_PATH=$DEPENDS_DIR/$HOST/lib make $MAKEJOBS check VERBOSE=1
   END_FOLD
 fi
 
 if [ "$RUN_UNIT_TESTS_SEQUENTIAL" = "true" ]; then
   BEGIN_FOLD unit-tests-seq
-  DOCKER_EXEC DIR_UNIT_TEST_DATA=${DIR_UNIT_TEST_DATA} LD_LIBRARY_PATH=$DEPENDS_DIR/$HOST/lib "${BASE_BUILD_DIR}/bitcoin-*/src/test/test_bitcoin*" --catch_system_errors=no -l test_suite
+  DOCKER_EXEC ${TEST_RUNNER_ENV} DIR_UNIT_TEST_DATA=${DIR_UNIT_TEST_DATA} LD_LIBRARY_PATH=$DEPENDS_DIR/$HOST/lib "${BASE_BUILD_DIR}/bitcoin-*/src/test/test_bitcoin*" --catch_system_errors=no -l test_suite
   END_FOLD
 fi