Removed Java development tools from setup.

These tools were originally necessary for some of the Homebrew
applications to install successfully (especially Elasticsearch) but
those requirements are no longer necessary. This also reduces the setup
friction by requiring less manual work on behalf of the installer.

README.md

@@ -42,9 +42,7 @@ the two projects are meant to be used:
 - Provides a command line interface, written in Bash, with no additional dependencies for
   installation and management of a macOS machine.
 - Supports macOS boot disk creation for fresh install of operating system.
-- Downloads and installs development tools (required by Homebrew):
-    - [Xcode Command Line Tools](https://developer.apple.com/xcode)
-    - [Java SE Development Kit](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html)
+- Downloads and installs [Xcode Command Line Tools](https://developer.apple.com/xcode).
 - Downloads, installs, and configures [Homebrew Formulas](http://brew.sh).
 - Downloads, installs, and configures [Homebrew Casks](https://caskroom.github.io).
 - Downloads, installs, and configures
@@ -157,11 +155,11 @@ project is built upon the functions found in the `lib` folder. See the
 
 When using the boot disk, you might experience a situation where you see a black screen with a white
 circle and diagonal line running through it. This means macOS lost or can't find the boot disk for
-some reason. To correct this, shut down the system and boot it up again while holding down the
+some reason. To correct this, shut down and boot up the system again while holding down the
 `OPTION+COMMAND+R+P` keys simultaneously. You might want to wait for the system boot sound to happen
 a few times before releasing the keys. This will clear the system NVRAM/PRAM. At this point you can
-shut down and restart the system following the boot disk instructions as recommended (the boot disk
-will be recognized now).
+shut down and restart the system following the boot disk instructions (the boot disk will be
+recognized now).
 
 ## Versioning
 

bin/install_dev_tools

@@ -11,13 +11,3 @@ if [[ "$xcode_response" != "y" ]]; then
   printf "ERROR: Xcode CLI tools must be installed before proceeding.\n"
   exit 1
 fi
-
-printf "Installing $JAVA_LABEL...\n"
-printf "%s\n" "You must manually accept the license and download the $JAVA_LABEL: $JAVA_DOWNLOAD_URL."
-open $JAVA_DOWNLOAD_URL
-
-read -p "Have you completed the $JAVA_LABEL install (y/n)? " java_response
-if [[ "$java_response" != "y" ]]; then
-  printf "ERROR: $JAVA_LABEL must be installed before proceeding.\n"
-  exit 1
-fi

lib/settings.sh

@@ -1,19 +1,11 @@
 #! /usr/bin/env bash
 
-# Defines global settings.
-
-# General
 set -o nounset
 set -o errexit
 set -o pipefail
 IFS=$'\n\t'
 
-# Globals
 export MAC_OS_BOOT_DISK_CREATOR="/Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia"
 export MAC_OS_BOOT_DISK_PATH="/Volumes/Untitled"
 export MAC_OS_WORK_PATH=/tmp/downloads
 export MAC_OS_CONFIG_PATH="../mac_os-config"
-
-# Java
-export JAVA_LABEL="Java SE Development Kit"
-export JAVA_DOWNLOAD_URL="https://www.oracle.com/technetwork/java/javase/downloads/jdk11-downloads-5066655.html"