Remove histogram from memory stacks

[sharwell]

The histogram in this view showed the location of managed objects in memory. I didn't find it particularly useful, but calculating it resulted in substantial performance overhead when trying to review the results from large heap dumps.

:memo: Please make sure to not rebase or squash this change during the merge process.

[codecov-io]

Codecov Report

Merging #431 into master will increase coverage by 0.12%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #431      +/-   ##
==========================================
+ Coverage   17.44%   17.56%   +0.12%     
==========================================
  Files         213      213              
  Lines      123790   123790              
  Branches    11971    11971              
==========================================
+ Hits        21590    21745     +155     
+ Misses     101189   101186       -3     
+ Partials     1011      859     -152

Flag	Coverage Δ
#2017	17.56% <100%> (+0.12%)	:arrow_up:
#Debug	17.56% <100%> (+0.12%)	:arrow_up:
#Release	100% <ø> (ø)	:arrow_up:

Impacted Files	Coverage Δ
src/PerfView/StackViewer/StackWindow.xaml.cs	25.85% <100%> (ø)	:arrow_up:
src/PerfView/StackViewer/PerfDataGrid.xaml.cs	34.02% <0%> (ø)	:arrow_up:
...c/TraceEvent/Parsers/ClrPrivateTraceEventParser.cs	19.58% <0%> (+0.03%)	:arrow_up:
src/TraceEvent/TraceEvent.cs	63.34% <0%> (+0.1%)	:arrow_up:
src/TraceEvent/DynamicTraceEventParser.cs	67.49% <0%> (+0.15%)	:arrow_up:
src/TraceEvent/TraceLog.cs	61.25% <0%> (+0.2%)	:arrow_up:
src/TraceEvent/Parsers/TplTraceEventParser.cs	49.65% <0%> (+0.22%)	:arrow_up:
src/TraceEvent/ETWTraceEventSource.cs	47.34% <0%> (+0.23%)	:arrow_up:
src/PerfView/StackViewer/CallTreeView.cs	47.94% <0%> (+0.25%)	:arrow_up:
src/TraceEvent/Stacks/FilterStacks.cs	50.71% <0%> (+0.31%)	:arrow_up:
... and 3 more

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[sharwell]

Updated after repository rewrite

[ninedan]

Great idea.