Scene authoring: match tuning and Radar Camera audio listener cleanup

- Main.unity: matchLoadTimeout 30, hitRevealDelay 0.35 -> 0.2, sim
  preset reselect (Mobile 2G), and remove the redundant AudioListener
  on Radar Camera (silences the "2 audio listeners in scene" warning).

Assets/Scenes/Main.unity

@@ -777,9 +777,10 @@ MonoBehaviour:
   hideDuration: 90
   seekDuration: 300
   resolveDuration: 50
+  matchLoadTimeout: 30
   shootRange: 100
   shootCooldown: 1.5
-  hitRevealDelay: 0.35
+  hitRevealDelay: 0.2
   embeddedRevealPercent: 20
   radarPingInterval: 30
   radarPingLifetime: 3
@@ -811,7 +812,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: Unity.Multiplayer.Tools.NetworkSimulator.Runtime::Unity.Multiplayer.Tools.NetworkSimulator.Runtime.NetworkSimulator
   m_PresetAsset: {fileID: 0}
   m_PresetReference:
-    rid: 4015181296416849996
+    rid: 4015181309769678916
   m_Scenario:
     rid: -2
   m_IsScenarioSettingsFolded: 0
@@ -821,7 +822,7 @@ MonoBehaviour:
     RefIds:
     - rid: -2
       type: {class: , ns: , asm: }
-    - rid: 4015181296416849996
+    - rid: 4015181309769678916
       type: {class: NetworkSimulatorPreset, ns: Unity.Multiplayer.Tools.NetworkSimulator.Runtime, asm: Unity.Multiplayer.Tools.NetworkSimulator.Runtime}
       data:
         <Name>k__BackingField: 'Mobile 2G [CDMA & GSM, ''00]'
@@ -2093,7 +2094,6 @@ GameObject:
   m_Component:
   - component: {fileID: 1036779881}
   - component: {fileID: 1036779884}
-  - component: {fileID: 1036779883}
   - component: {fileID: 1036779882}
   m_Layer: 7
   m_Name: Radar Camera
@@ -2162,14 +2162,6 @@ MonoBehaviour:
     m_VarianceClampScale: 0.9
     m_ContrastAdaptiveSharpening: 0
   m_Version: 2
---- !u!81 &1036779883
-AudioListener:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 1036779880}
-  m_Enabled: 1
 --- !u!20 &1036779884
 Camera:
   m_ObjectHideFlags: 0