Removed unnecessary Indices & properties

Removed IncludeInComboIndex & ComboWeight as Index properties.
Removed six unused indices from the IndexProperties config file, including Rain and Cicadas.
Remove BGN string constant.
remove two tests for now deleted Indices.

Shifted method ConvertToDictionaryOfSummaryIndices() and related method to class SummaryIndexValues because this was more suitable location ie dealing with dictiionaries of arrays, not matrices.

src/AnalysisConfigFiles/IndexPropertiesConfig.ChannelIntegrity.yml

@@ -13,8 +13,6 @@ RankOrder: # AKA IndexCount
   NormMax: 100.0
   ProjectID: Acoustic Indices
   Units: ""
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 StartOffset:
   Name: Segment start time
   Comment: "Exact time span (total minutes) from start of recording to start of this segment."
@@ -25,8 +23,6 @@ StartOffset:
   NormMax: 200.0
   ProjectID: Acoustic Indices
   Units: "min"
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 StartOffsetMinute:
   Name: Segment start minute
   Comment: "Total minutes from start of recording to start of this segment."
@@ -37,8 +33,6 @@ StartOffsetMinute:
   NormMax: 200.0
   ProjectID: Acoustic Indices
   Units: "min"
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 StartOffsetSecond:
   Name: Segment start second
   Comment: "Total seconds from start of recording to start of this segment."
@@ -49,8 +43,6 @@ StartOffsetSecond:
   NormMax: 200.0
   ProjectID: Acoustic Indices
   Units: "sec"
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 SegmentDuration:
   Name: Time duration of audio segment
   Comment: "Exact time span (total minutes) of this audio segment - typically 1.0 minutes."
@@ -61,8 +53,6 @@ SegmentDuration:
   NormMax: 1.0
   ProjectID: Acoustic Indices
   Units: "min"
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 ZeroSignal:
   Name: Zero Signal Index
   Comment: "Indicates if signal segment is flat or zero."
@@ -73,8 +63,6 @@ ZeroSignal:
   NormMax: 1.0
   ProjectID: Acoustic Indices
   Units: ""
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 ClippingIndex:
   Name: Clipping Index
   Comment: "Av number of clipped samples/sec i.e. where the abs. amplitude of two conscutive samples is within 4*epislon of the max signal value."
@@ -85,8 +73,6 @@ ClippingIndex:
   NormMax: 5.0
   ProjectID: Acoustic Indices
   Units: "avClips/s"
-  IncludeInComboIndex: false
-  ComboWeight: 0.0
 ZeroCrossingFractionLeft:
   Name: Zero Crossing Fraction Left
   Comment: ""