Only create Versions DF when needed

spec/app/finders/plugin_version_spec.rb

@@ -1,8 +1,5 @@
 # frozen_string_literal: true
 
-# If this file is tested alone (rspec path-to-this-file), then there will be an error about
-# constants not being intilialized. This is due to the Dynamic Finders.
-
 describe WPScan::Finders::PluginVersion::Base do
   subject(:plugin_version) { described_class.new(plugin) }
   let(:plugin)             { WPScan::Model::Plugin.new(slug, target) }
@@ -15,7 +12,7 @@ describe WPScan::Finders::PluginVersion::Base do
       expect(plugin_version.finders.map { |f| f.class.to_s.demodulize }).to match_array @expected
     end
 
-    context 'when no related specific finders' do
+    context 'when no related dynamic finders' do
       let(:slug) { 'spec' }
 
       it 'contains the default finders' do
@@ -25,19 +22,13 @@ describe WPScan::Finders::PluginVersion::Base do
 
     # Dynamic Version Finders are not tested here, they are in
     # spec/lib/finders/dynamic_finder/plugin_versions_spec
-    context 'when specific finders' do
-      let(:specific) do
-        {
-          # None so far
-        }
-      end
-
+    context 'when dynamic finders' do
       WPScan::DB::DynamicFinders::Plugin.versions_finders_configs.each do |plugin_slug, configs|
         context "when #{plugin_slug} plugin" do
           let(:slug) { plugin_slug }
 
-          it 'contains the expected finders (default + specific + the dynamic ones)' do
-            @expected = default_finders + [*specific[plugin_slug]] + configs.keys
+          it 'contains the expected finders (default + the dynamic ones)' do
+            @expected = default_finders + configs.keys
           end
         end
       end