cpu,stats: Update stats for tage_sc_l to new style stats

Updated tage_sc_l.hh and tage_sc_l.cc to use new style stats.

Change-Id: If172c95bb728c7c3748269469781212ef1da6f32
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36336
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Trivikram Reddy <tvreddy@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

src/cpu/pred/tage_sc_l.cc

@@ -458,9 +458,3 @@ TAGE_SC_L::update(ThreadID tid, Addr branch_pc, bool taken, void *bp_history,
 
     delete bi;
 }
-
-void
-TAGE_SC_L::regStats()
-{
-    LTAGE::regStats();
-}

src/cpu/pred/tage_sc_l.hh

@@ -154,8 +154,6 @@ class TAGE_SC_L: public LTAGE
     bool predict(
         ThreadID tid, Addr branch_pc, bool cond_branch, void* &b) override;
 
-    void regStats() override;
-
     void update(ThreadID tid, Addr branch_addr, bool taken, void *bp_history,
                 bool squashed, const StaticInstPtr & inst,
                 Addr corrTarget) override;