limit QueryMatches use to db.go

doesn't really have use in being public and conflicts with my upcoming database change

Signed-off-by: Emily Markova <emily.markova@gmail.com>
Change-Id: Ibb6f4704084088cc51e5cf41538c700d613bb131
diff --git a/scouting/db/db.go b/scouting/db/db.go
index 8a28db4..85e3d98 100644
--- a/scouting/db/db.go
+++ b/scouting/db/db.go
@@ -149,7 +149,7 @@
 }
 
 func (database *Database) AddToStats(s Stats) error {
-	matches, err := database.QueryMatches(s.TeamNumber)
+	matches, err := database.queryMatches(s.TeamNumber)
 	if err != nil {
 		return err
 	}
@@ -241,7 +241,7 @@
 	return rankins, result.Error
 }
 
-func (database *Database) QueryMatches(teamNumber_ int32) ([]Match, error) {
+func (database *Database) queryMatches(teamNumber_ int32) ([]Match, error) {
 	var matches []Match
 	result := database.
 		Where("r1 = $1 OR r2 = $1 OR r3 = $1 OR b1 = $1 OR b2 = $1 OR b3 = $1", teamNumber_).