Switch to upstream Go runfiles library

Now that we upgraded rules_go, we can use its runfiles library. The
one we were using has been upstreamed into rules_go, so there's no
reason not to use the upstream one now.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I5253ceabc4f166f850ea1f9a42fd42cd6f06f02f
diff --git a/scouting/db/testdb_server/main.go b/scouting/db/testdb_server/main.go
index ecb118f..81835d2 100644
--- a/scouting/db/testdb_server/main.go
+++ b/scouting/db/testdb_server/main.go
@@ -18,7 +18,7 @@
 	"strings"
 	"syscall"
 
-	"github.com/phst/runfiles"
+	"github.com/bazelbuild/rules_go/go/runfiles"
 )
 
 func check(err error, message string) {
@@ -43,7 +43,7 @@
 }
 
 func getRunfile(path string) string {
-	result, err := runfiles.Path(path)
+	result, err := runfiles.Rlocation(path)
 	check(err, fmt.Sprint("Failed to find runfile path for ", path))
 	return result
 }