Remove temporary directory after running codspeed

Author: mx-psi

Makefile.Common

@@ -103,4 +103,5 @@ moddownload:
 codspeed-benchmark:
 	if go test ./... -list=Benchmark | grep -q Benchmark; then \
 		codspeed run --mode walltime --setup-cache-dir=~/.cache/codspeed-action -- 'go test -bench=. ./...'; \
+		rm -rf /tmp/*
 	fi