Update VisualStudio.gitignore - remove *.vbp extension

Remove *.vbp extension. Such files are the main Visual Basic 6 Project Files and should not be ignored. It's like ignoring .csproj or .vbproj files in .NET projects.

Author: gh658804

VisualStudio.gitignore

@@ -310,9 +310,6 @@ node_modules/
 # Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
 *.vbw
 
-# Visual Studio 6 auto-generated project file (contains which files were open etc.)
-*.vbp
-
 # Visual Studio 6 workspace and project file (working project files containing files to include in project)
 *.dsw
 *.dsp