This commit reverts #2678

PHPUnit 6.2-ge79069e by Sebastian Bergmann and contributors.

Runtime:       PHP 7.1.5 with Xdebug 2.5.4
Configuration: /usr/local/src/phpunit/phpunit.xml

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Time: 8.11 seconds, Memory: 14.00MB

There was 1 failure:

1) /usr/local/src/phpunit/tests/Regression/GitHub/1351.phpt
Failed asserting that string matches format description.
--- Expected
+++ Actual
@@ @@
 PHPUnit 6.2-ge79069e by Sebastian Bergmann and contributors.

-F.E.E                                                               5 / 5 (100%)
+F.EFE                                                               5 / 5 (100%)
@@ @@

+/usr/local/src/phpunit/tests/Regression/GitHub/1351/Issue1351Test.php:32
+
 Caused by
 LogicException: Expected exception.
-Caused by

+/usr/local/src/phpunit/tests/Regression/GitHub/1351/Issue1351Test.php:30
+
 2) Issue1351Test::testPhpCoreLanguageException
 PDOException: SQLSTATE[HY000]: General error: 1 no such table: php_wtf

+/usr/local/src/phpunit/tests/Regression/GitHub/1351/Issue1351Test.php:48

 --

-There was 1 failure:
+There were 2 failures:

 1) Issue1351Test::testFailurePre
 Expected failure.
-There were 2 failures:
+Failed asserting that true is false.
+
+/usr/local/src/phpunit/tests/Regression/GitHub/1351/Issue1351Test.php:14
+
+2) Issue1351Test::testExceptionPost
+ChildProcessClass1351 is not loaded.
+Failed asserting that true is false.
+
+/usr/local/src/phpunit/tests/Regression/GitHub/1351/Issue1351Test.php:39
+
 ERRORS!
-Tests: 5, Assertions: 5, Errors: 2, Failures: 1.
+Tests: 5, Assertions: 5, Errors: 2, Failures: 2.

/usr/local/src/phpunit/src/Framework/Constraint/Constraint.php:117
/usr/local/src/phpunit/src/Framework/Constraint/Constraint.php:62
/usr/local/src/phpunit/src/Framework/Assert.php:2116
/usr/local/src/phpunit/src/Framework/Assert.php:1768
/usr/local/src/phpunit/src/Runner/PhptTestCase.php:126
/usr/local/src/phpunit/src/Runner/PhptTestCase.php:204
/usr/local/src/phpunit/src/Framework/TestSuite.php:746
/usr/local/src/phpunit/src/Framework/TestSuite.php:746
/usr/local/src/phpunit/src/TextUI/TestRunner.php:541
/usr/local/src/phpunit/src/TextUI/Command.php:210
/usr/local/src/phpunit/src/TextUI/Command.php:141

FAILURES!
Tests: 1543, Assertions: 2796, Failures: 1.

src/Framework/ExceptionWrapper.php

@@ -32,11 +32,6 @@ class ExceptionWrapper extends Exception
      * @var ExceptionWrapper|null
      */
     protected $previous;
-
-    /**
-     * @var Throwable
-     */
-    protected $originalException;
 
     /**
      * @param Throwable $t
@@ -50,7 +45,6 @@ public function __construct(Throwable $t)
         $this->className = \get_class($t);
         $this->file      = $t->getFile();
         $this->line      = $t->getLine();
-        $this->originalException = $t;
 
         $this->serializableTrace = $t->getTrace();
 
@@ -70,14 +64,6 @@ public function getClassName()
     {
         return $this->className;
     }
-
-    /**
-     * @return Throwable
-     */
-    public function getOriginalException()
-    {
-        return $this->originalException;
-    }
 
     /**
      * @return ExceptionWrapper