Revert "Enable verbose mode in tests driver for Travis troubleshooting."

This reverts commit 05236a89af.

src/Generator.Tests/GeneratorTest.cs

@@ -31,7 +31,6 @@ namespace CppSharp.Utils
             options.SharedLibraryName = name + ".Native";
             options.GenerateLibraryNamespace = true;
             options.Quiet = true;
-            options.Verbose = true;
             options.IgnoreParseWarnings = true;
 
             driver.Diagnostics.Message("");