Avoid log pT plot

Makes the task fail because there seem to be values <0 which causes a
FATAL.

Author: Benedikt Volkel

MC/config/analysis_testing/json/analysis-testing-mc.json

@@ -28,7 +28,7 @@
         "vertex-z-min": "-10",
         "vertex-z-max": "10",
         "pt-bins": "500",
-        "log-pt": "1",
+        "log-pt": "0",
         "eta-bins": "500",
         "y-bins": "500",
         "phi-bins": "500",