Remove duplicate setup of VBProjects in MockVbeBuilder.

Author: comintern

RubberduckTests/Mocks/MockVbeBuilder.cs

@@ -68,8 +68,6 @@ public MockVbeBuilder AddProject(Mock<IVBProject> project)
 
             _vbe.SetupGet(vbe => vbe.ActiveVBProject).Returns(project.Object);
             _vbe.SetupGet(vbe => vbe.Version).Returns("7.1");
-
-            _vbProjects = CreateProjectsMock();
             _vbe.SetupGet(m => m.VBProjects).Returns(() => _vbProjects.Object);
 
             return this;