Change default setting of mult. axis for trackQC. (#1315)

* Change default setting of mult. axis for trackQC.
  --> Remove setting for binsTrackMultiplicity to use default.

---------

Co-authored-by: Mattia Faggin <mfaggin@cern.ch>

Author: mfaggin

MC/config/analysis_testing/json/EventSelectionQA/pbpb/analysis-testing-data.json

@@ -296,13 +296,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

MC/config/analysis_testing/json/EventTrackQA/pbpb/analysis-testing-data.json

@@ -37,13 +37,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

MC/config/analysis_testing/json/EventTrackQA/pp/analysis-testing-data.json

@@ -37,13 +37,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

MC/config/analysis_testing/json/default/pbpb/analysis-testing-data.json

@@ -295,13 +295,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

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

@@ -1055,13 +1055,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

MC/config/analysis_testing/json/default/pp/analysis-testing-data.json

@@ -295,13 +295,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",

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

@@ -1055,13 +1055,6 @@
         "50"
       ]
     },
-    "binsTrackMultiplcity": {
-      "values": [
-        "200",
-        "0",
-        "200"
-      ]
-    },
     "binsVertexPosXY": {
       "values": [
         "500",