Remove unrelated artifacts from the .gitignore file that aren't relevant (#729)

to a C project.

.gitignore

@@ -45,15 +45,6 @@ TestResult.xml
 [Rr]eleasePS/
 dlldata.c
 
-# Benchmark Results
-BenchmarkDotNet.Artifacts/
-
-# .NET Core
-project.lock.json
-project.fragment.lock.json
-artifacts/
-**/Properties/launchSettings.json
-
 # StyleCop
 StyleCopReport.xml
 
@@ -114,14 +105,6 @@ $tf/
 # Guidance Automation Toolkit
 *.gpState
 
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# JustCode is a .NET coding add-in
-.JustCode
-
 # TeamCity is a build add-in
 _TeamCity*
 
@@ -177,18 +160,6 @@ publish/
 # in these scripts will be unencrypted
 PublishScripts/
 
-# NuGet Packages
-*.nupkg
-# The packages folder can be ignored because of Package Restore
-**/[Pp]ackages/*
-# except build/, which is used as an MSBuild target.
-!**/[Pp]ackages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/[Pp]ackages/repositories.config
-# NuGet v3's project.json files produces more ignorable files
-*.nuget.props
-*.nuget.targets
-
 # Microsoft Azure Build Output
 csx/
 *.build.csdef
@@ -320,9 +291,6 @@ OpenCover/
 # Azure Stream Analytics local run output
 ASALocalRun/
 
-# MSBuild Binary and Structured Log
-*.binlog
-
 # NVidia Nsight GPU debugger configuration file
 *.nvuser