We use ERL_LIBS, simplify "make perfs"

Also revert the previous change. Didn't work.

Makefile

@@ -54,8 +54,5 @@ ifeq ($(MAKECMDGOALS),perfs)
 .NOTPARALLEL:
 endif
 
-ci-extra:: perfs
-
 perfs: test-build
-	$(gen_verbose) erl -noshell -pa ebin deps/horse/ebin \
-		-eval 'horse:app_perf($(PROJECT)), erlang:halt().'
+	$(gen_verbose) erl -noshell -pa ebin -eval 'horse:app_perf($(PROJECT)), erlang:halt().'

erlang.mk

@@ -6023,7 +6023,7 @@ ci_verbose = $(ci_verbose_$(V))
 
 define ci_target
 ci-$1: $(CI_INSTALL_DIR)/$2
-	$(verbose) $(MAKE) --no-print-directory distclean
+	$(verbose) $(MAKE) --no-print-directory clean
 	$(ci_verbose) \
 		PATH="$(CI_INSTALL_DIR)/$2/bin:$(PATH)" \
 		CI_OTP_RELEASE="$1" \