alot: remove options

Formula/alot.rb

@@ -16,14 +16,12 @@ class Alot < Formula
     sha256 "ba94977585c50e29025be7e592a31809d2f520d50fdb8f023a445dc78ca1bd9d" => :el_capitan
   end
 
-  option "without-sphinx-doc", "Don't build documentation"
-
+  depends_on "sphinx-doc" => :build
   depends_on "swig" => :build
   depends_on "gpgme"
   depends_on "libmagic"
   depends_on "notmuch"
   depends_on "python@2"
-  depends_on "sphinx-doc" => [:build, :recommended]
 
   resource "Automat" do
     url "https://files.pythonhosted.org/packages/de/05/b8e453085cf8a7f27bb1226596f4ccf5cc9e758377d60284f990bbdc592c/Automat-0.6.0.tar.gz"
@@ -95,7 +93,6 @@ class Alot < Formula
     pkgshare.install Dir["extra/*"] - %w[extra/completion]
     zsh_completion.install "extra/completion/alot-completion.zsh" => "_alot"
 
-    if build.with? "sphinx-doc"
     ENV["LC_ALL"] = "en_US.UTF-8"
     ENV["SPHINXBUILD"] = Formula["sphinx-doc"].opt_bin/"sphinx-build"
     cd "docs" do
@@ -105,7 +102,6 @@ class Alot < Formula
       doc.install Dir["build/html/*"]
     end
   end
-  end
 
   test do
     (testpath/".notmuch-config").write "[database]\npath=#{testpath}/Mail"