Disable highscores in soccer mode. The same as in 3 strikes battle.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14134 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/race/race_manager.hpp

@@ -623,6 +623,7 @@ public:
         //       The reason for this duplication is that we might want to know
         //       whether to display highscores without creating a World.
         return m_minor_mode != MINOR_MODE_3_STRIKES &&
+               m_minor_mode != MINOR_MODE_SOCCER &&
                m_minor_mode != MINOR_MODE_FOLLOW_LEADER;
     }   // modeHasHighscore