Revert "[build/setup.sh] Add libsodium setup to install flow. NOTE: f…

…or some reason we hang on pip install -e ."

This reverts commit 4f9e5e2.

setup.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e
 
@@ -34,42 +34,6 @@ color '36;1' "
      https://www.github.com/inboxapp/inbox
 "
 
-if [ ! -f "/usr/include/sodium.h" ]; then
-color '35;1' 'Installing sodium crypto library'
-    mkdir -p setup
-    cd setup
-    libsodium=libsodium-0.4.3.tar.gz
-    if [ ! -f $libsodium ]; then
-        color '34;1' ' > Downloading...'
-        wget -q -O "$libsodium" https://download.libsodium.org/libsodium/releases/$libsodium
-    fi
-
-    color '34;1' ' > Checking the hash...'
-    if ! shasum -a 256 -s -c << EOF
-        599ce19ae6ace2d30aee353b931088f720713c4e1d0b2918ed46de1914fb6042 *$libsodium
-EOF
-    then
-        color '31;1' " Error verifying $libsodium hash!"
-        exit 1
-    else
-        color '32;1' " $libsodium hash ok."
-    fi
-
-    tar -zxf $libsodium
-    pushd `pwd`
-    cd ${libsodium//.tar.gz/}
-    color '34;1' ' > Configuring...'
-    ./configure --prefix=/usr --quiet
-    color '34;1' ' > Building...'
-    make -s > /tmp/$libsodium.build.out
-    color '34;1' ' > Installing...'
-    make install -s > /tmp/$libsodium.build.out
-    popd
-    color '34;1' ' > Cleaning up'
-    rm -fr setup $libsodium
-    color '34;1' ' > libsodium installation done.'
-fi
-
 color '35;1' 'Updating packages...'
 apt-get update
 apt-get -y install python-software-properties