Remove ignored "Test file - please ignore.txt" from source control (#112)

Author: jaenyph

.gitignore

@@ -4,6 +4,6 @@ _ReSharper.*
 *.suo
 *.user
 packages
-/src/DelegateDecompiler.EfTests/GeneratedDocumentation/Test file - please ignore.txt
+/src/DelegateDecompiler.EntityFramework.Tests/GeneratedDocumentation/Test file - please ignore.txt
 *.sln.ide
 .vs/