[AI-FSSDK] [FSSDK-12337] Fix rubocop Lint/Void offense in spec_params

Remove redundant else clause in deep_clone that was accidentally
restored in a previous commit.

Author: FarhanAnjum-opti

spec/spec_params.rb

@@ -2062,8 +2062,6 @@ def self.deep_clone(obj)
         new_obj.map! do |val|
           deep_clone(val)
         end
-      else
-        new_obj
       end
     end
   end