Merge __init_env__.php into __init_script__.php

Summary: There are currently two files, but all scripts require both of them,
which is clearly silly. In the longer term I want to rewrite all of this init
stuff to be more structured (e.g., merge webroot/index.php and __init_script__
better) but this reduces the surface area of the ad-hoc "include files" API we
have now, at least.

Test Plan:
  - Grepped for __init_env__.php (no hits)
  - Ran a unit test (to test unit changes)
  - Ran a daemon (to test daemon changes)

Reviewers: jungejason, nh, tuomaspelkonen, aran

Reviewed By: jungejason

CC: aran, jungejason

Differential Revision: 976

scripts/search/index_one_commit.php

@@ -19,7 +19,6 @@
 
 $root = dirname(dirname(dirname(__FILE__)));
 require_once $root.'/scripts/__init_script__.php';
-require_once $root.'/scripts/__init_env__.php';
 
 if (empty($argv[1])) {
   echo "usage: index_one_commit.php <commit_name>\n";

scripts/search/reindex_all_users.php

@@ -19,7 +19,6 @@
 
 $root = dirname(dirname(dirname(__FILE__)));
 require_once $root.'/scripts/__init_script__.php';
-require_once $root.'/scripts/__init_env__.php';
 
 $users = id(new PhabricatorUser())->loadAll();
 echo "Indexing ".count($users)." users";

scripts/search/reindex_everything.php

@@ -19,7 +19,6 @@
 
 $root = dirname(dirname(dirname(__FILE__)));
 require_once $root.'/scripts/__init_script__.php';
-require_once $root.'/scripts/__init_env__.php';
 
 // TODO: Get rid of this script eventually, once this stuff is better-formalized
 // in Timeline consumers.

scripts/search/reindex_maniphest.php

@@ -19,7 +19,6 @@
 
 $root = dirname(dirname(dirname(__FILE__)));
 require_once $root.'/scripts/__init_script__.php';
-require_once $root.'/scripts/__init_env__.php';
 
 ini_set('memory_limit', -1);
 $tasks = id(new ManiphestTask())->loadAll();