Remove previews for non-UI components that didn't add much value

The coverage shouldn't drop after this change.

(cherry picked from commit d4c83e3)

Author: elia

admin/spec/components/previews/solidus_admin/feedback/component_preview.rb

@@ -3,10 +3,6 @@
 require "spec_helper"
 
 RSpec.describe SolidusAdmin::Products::Status::Component, type: :component do
-  it "renders the overview preview" do
-    render_preview(:overview)
-  end
-
   describe "#status" do
     it "returns :available when the product is available" do
       product = Spree::Product.new(available_on: Time.current)

admin/spec/components/previews/solidus_admin/feedback/component_preview/overview.html.erb

@@ -3,10 +3,6 @@
 require "spec_helper"
 
 RSpec.describe SolidusAdmin::Sidebar::AccountNav::Component, type: :component do
-  it "renders the overview preview" do
-    render_preview(:overview)
-  end
-
   it "renders correctly" do
     component = described_class.new(
       user_label: "Alice",