Merge #695: download: Remove i686 Linux link

fa73ac1 download: Remove i686 Linux links (MarcoFalke)

Pull request description:

  There is only one known user of the i686 linux binary, so it is planned to be removed from the build and quality assurance pipeline. The last user (or users) is encouraged to compile locally with `make check && ./test/functional/test_runner.py` to run the tests on their target system. Using clang, this is possible even on systems with 1 GB of ram. See bitcoin/bitcoin#17504

  Prepare this website and remove the download link from it early.

ACKs for top commit:
  harding:
    Tested ACK fa73ac1

Tree-SHA512: f904d00371d077bf2fb88e69bdde120db518926556a709bc438407a7a00b0572efa61798e48c58e90aeb6191ab2ce2d5846ee178c3a0b5c5f34023999a0cfb41

Author: harding

_data/binaries.yaml

@@ -2,6 +2,5 @@ win64zip: "win64.zip"
 win64exe: "win64-setup.exe"
 macdmg: "-osx.dmg"
 mactar: "osx64.tar.gz"
-lin32: "i686-pc-linux-gnu.tar.gz"
 lin64: "x86_64-linux-gnu.tar.gz"
 riscv64: "riscv64-linux-gnu"

_includes/templates/download.html

@@ -1,6 +1,6 @@
 {% capture /dev/null %}<!-- suppress render of this part -->
 <!-- Copyright 2013 - 2016 The Bitcoin.org Project.
-     Copyright 2017 - 2018 The BitcoinCore.org Project
+     Copyright 2017 - 2020 The BitcoinCore.org Project
      This file is licensed under the MIT License (MIT) available on
      http://opensource.org/licenses/MIT. -->
 {% assign VERSION_SORTED_RELEASES = site.releases | sort: 'release' | reverse %}
@@ -41,9 +41,7 @@ <h2>{{ page.latestversion }} {{CURRENT_RELEASE}} <a type="application/rss+xml" h
       <div>
         <img src="/assets/images/os/med_linux.png" alt="linux">
         <span>
-          <a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.lin64 }}" id="downloadlin">Linux (tgz)</a>
-          <span><a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.lin64 }}" class="dl" id="lin64">64 bit</a> -
-            <a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.lin32 }}" class="dl" id="lin32">32 bit</a></span>
+          <a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.lin64 }}" class="dl" id="lin64">Linux (tgz)</a>
         </span>
       </div>
     </div>
@@ -251,21 +249,16 @@ <h2 style="text-align: center">{{page.build_reproduction}}</h2>
 <script type="text/javascript">
 var os = 'windows64';
 if (navigator.userAgent.indexOf('Mac') != -1) var os = 'mac'
-else if (navigator.userAgent.indexOf('Linux') != -1) {
-	var os='linux32';
-	if (navigator.userAgent.indexOf('x86_64') != -1) var os = 'linux64';
-}
+else if (navigator.userAgent.indexOf('Linux') != -1) var os = 'linux64'
 else if (navigator.userAgent.indexOf('WOW64') != -1 || navigator.userAgent.indexOf('Win64') != -1) var os='windows64';
 var but = document.getElementById('downloadbutton');
 var linkwinexe = document.getElementById('downloadwinexe');
 var linkwinzip = document.getElementById('downloadwinzip');
-var linklin = document.getElementById('downloadlin');
 var hrefwin64exe = document.getElementById('win64exe').href;
 var hrefwin64zip = document.getElementById('win64zip').href;
 var hrefmacdmg = document.getElementById('macdmg').href;
 var hrefmactar = document.getElementById('mactar').href;
 var hreflin64 = document.getElementById('lin64').href;
-var hreflin32 = document.getElementById('lin32').href;
 switch (os) {
 case 'windows64':
 	but.getElementsByTagName('IMG')[0].src = '/assets/images/os/but_windows.svg';
@@ -278,11 +271,6 @@ <h2 style="text-align: center">{{page.build_reproduction}}</h2>
 	but.href = hreflin64;
 	linklin.href = hreflin64;
 break;
-case 'linux32':
-	but.getElementsByTagName('IMG')[0].src = '/assets/images/os/but_linux.png';
-	but.href = hreflin32;
-	linklin.href = hreflin32;
-break;
 case 'mac':
 	but.getElementsByTagName('IMG')[0].src = '/assets/images/os/but_mac.svg';
 	but.href = hrefmacdmg;