Fix coding standards (extra lines in specs)

spec/uh/wm/cli_spec.rb

@@ -8,7 +8,6 @@ module Uh
       let(:stdout)    { StringIO.new }
       let(:stderr)    { StringIO.new }
       let(:arguments) { [] }
-
       subject(:cli)   { described_class.new arguments, stdout: stdout }
 
       describe '.run' do

spec/uh/wm/env_spec.rb

@@ -3,7 +3,6 @@ module Uh
     RSpec.describe Env do
       let(:output)  { StringIO.new }
       let(:logger)  { Logger.new(StringIO.new) }
-
       subject(:env) { described_class.new output, logger_: logger }
 
       describe '#logger' do