fix for update feature [ci skip]

benchmark/plot_benchmarks.py

@@ -79,7 +79,7 @@ def on_key_press(event):
     global thread
     if thread and thread.is_alive(): return
 
-    if event.key != "r": return
+    if event.key != "u": return
 
     hash = commits[current_index]
 

benchmark/run_benchmarks.py

@@ -52,7 +52,6 @@ def run(results, comments, hash, update):
     if not update and hash in results:
         return
     print(hash, comments[hash])
-    results[hash] = None
     subp.call(("rm", "-rf", "../include"))
     if subp.call(("git", "checkout", hash, "--", "../include")) != 0:
         print("[Benchmark] Cannot checkout include folder\n")