🧹 Remove spec/models/site_spec.rb

[jeremyf]

Below is the diff showing that the knapsack is a subset of the hyku
version. As such, we can delete the knapsack version.

❯ diff spec/models/site_spec.rb hyrax-webapp/spec/models/site_spec.rb
74a75,92
>
>     context "valid attributes" do
>       subject { described_class.new }
>
>       it "is valid without theme attributes" do
>         expect(subject).to be_valid
>       end
>
>       it "is valid with home page theme attributes" do
>         subject.home_theme = "Catchy Theme"
>         subject.show_theme = "Images Show Page"
>         subject.search_theme = "Grid View"
>         expect(subject).to be_valid
>         expect(subject.home_theme).to eq "Catchy Theme"
>         expect(subject.show_theme).to eq "Images Show Page"
>         expect(subject.search_theme).to eq "Grid View"
>       end
>     end

Related to:

• ☄️ Epic: Failing Specs #324