Remove change that is now a PR of its own

See #944

Author: franzpoeschel

test/ParallelIOTest.cpp

@@ -960,13 +960,11 @@ TEST_CASE( "parallel_adios2_json_config", "[parallel][adios2]" )
     write( "../samples/jsonConfiguredBP4Parallel.bp", writeConfigBP4 );
     write( "../samples/jsonConfiguredBP3Parallel.bp", writeConfigBP3 );
 
-    MPI_Barrier( MPI_COMM_WORLD );
-
     // BP3 engine writes files, BP4 writes directories
-    REQUIRE( openPMD::auxiliary::file_exists(
-        "../samples/jsonConfiguredBP3Parallel.bp" ) );
+    REQUIRE(
+        openPMD::auxiliary::file_exists( "../samples/jsonConfiguredBP3.bp" ) );
     REQUIRE( openPMD::auxiliary::directory_exists(
-        "../samples/jsonConfiguredBP4Parallel.bp" ) );
+        "../samples/jsonConfiguredBP4.bp" ) );
 
     std::string readConfigBP3 = R"END(
 {