[tests] cherry-picked simplifying test outputs

src/plugins/e-acsl/tests/bts/oracle/bts1304.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1307.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1324.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1326.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1390.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1398.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1399.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1478.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1700.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1717.res.oracle