Remove the benchmarks from the regtest target, they timeout on the buildds.

--- a/tests/benchmark/Makefile.am

+++ b/tests/benchmark/Makefile.am

@@ -229,13 +229,10 @@

 		done; \

 	fi

-.PHONY: short_bench long_bench regtest

+.PHONY: short_bench long_bench

 short_bench:

 	./run.sh short_bench_tests

 long_bench:

 	./run.sh long_bench_tests

-

-regtest:

-	./run.sh regression_tests

--- a/tests/Makefile.am

+++ b/tests/Makefile.am

@@ -8,4 +8,3 @@

 	cd benchmark && $(MAKE) $(AM_MAKEFLAGS) long_bench

 regtest:

 	cd regression && $(MAKE) $(AM_MAKEFLAGS) regtest

-	cd benchmark && $(MAKE) $(AM_MAKEFLAGS) regtest