Remove links to guides

Author: josevalim

downloads/books/elixir-getting-started-guide.epub

@@ -18,12 +18,6 @@ Let's get started!
 
 > If you find any errors in the tutorial or on the website, [please report a bug or send a pull request to our issue tracker](https://github.com/elixir-lang/elixir-lang.github.com).
 
-> The Elixir guides are also available in EPUB format:
->
->   * [Getting started guide](https://elixir-lang.org/downloads/books/elixir-getting-started-guide.epub)
->   * [Mix and OTP guide](https://elixir-lang.org/downloads/books/mix-and-otp.epub)
->   * [Meta-programming guide](https://elixir-lang.org/downloads/books/meta-programming-in-elixir.epub)
-
 ## Installation
 
 If you haven't yet installed Elixir, visit our [installation page](/install.html). Once you are done, you can run `elixir --version` to get the current Elixir version.

downloads/books/meta-programming-in-elixir.epub

@@ -7,12 +7,6 @@ category: Meta-programming in Elixir
 
 This guide aims to introduce the meta-programming techniques available in Elixir. The ability to represent an Elixir program by its own data structures is at the heart of meta-programming. This chapter starts by exploring those structures and the associated `quote` and `unquote` constructs, so we can take a look at macros in the next chapter and finally build our own domain specific language.
 
-> The Elixir guides are also available in EPUB format:
->
->   * [Getting started guide](https://repo.hex.pm/guides/elixir/elixir-getting-started-guide.epub)
->   * [Mix and OTP guide](https://repo.hex.pm/guides/elixir/mix-and-otp.epub)
->   * [Meta-programming guide](https://repo.hex.pm/guides/elixir/meta-programming-in-elixir.epub)
-
 ## Quoting
 
 The building block of an Elixir program is a tuple with three elements. For example, the function call `sum(1, 2, 3)` is represented internally as:

downloads/books/mix-and-otp.epub

@@ -46,12 +46,6 @@ In this chapter, we will create our first project using Mix and explore differen
 >
 > The final code for the application built in this guide is in [this repository](https://github.com/josevalim/kv_umbrella) and can be used as a reference.
 
-> The Elixir guides are also available in EPUB format:
->
->   * [Getting started guide](https://repo.hex.pm/guides/elixir/elixir-getting-started-guide.epub)
->   * [Mix and OTP guide](https://repo.hex.pm/guides/elixir/mix-and-otp.epub)
->   * [Meta-programming guide](https://repo.hex.pm/guides/elixir/meta-programming-in-elixir.epub)
-
 ## Our first project
 
 When you install Elixir, besides getting the `elixir`, `elixirc` and `iex` executables, you also get an executable Elixir script named `mix`.