Clean DONE tags from tests

Remove most of the `===DONE===` tags and its variations.
Keep `===DONE===` if the test output otherwise becomes empty.

Closes GH-4872.

Author: villfa

Zend/tests/019.phpt

@@ -360,7 +360,6 @@ var_dump($global_var);
 //Note: No error conditions relating to passing arguments can be tested
 // because these are not functions but statements, it will result in syntax error.
 ?>
-===DONE===
 --EXPECTF--
 *** Testing unset(), empty() & isset() with scalar variables ***
 -- Iteration 1 --
@@ -1330,4 +1329,3 @@ bool(false)
 bool(false)
 bool(true)
 int(10)
-===DONE===

Zend/tests/bug26166.phpt

@@ -61,11 +61,9 @@ try {
 }
 
 ?>
-===DONE===
 --EXPECT--
 Hello World!
 ===NONE===
 Method NoneTest::__toString() must return a string value
 ===THROW===
 This is an error!
-===DONE===

Zend/tests/bug26229.phpt

@@ -23,7 +23,5 @@ catch(Exception $e)
 	echo $e->getMessage() . "\n";
 }
 ?>
-===DONE===
 --EXPECT--
 Objects returned by array_iterator::getIterator() must be traversable or implement interface Iterator
-===DONE===

Zend/tests/bug26696.phpt

@@ -16,7 +16,5 @@ for ($i = 0; $i < $len; $i++) {
 }
 
 ?>
-===DONE===
 --EXPECT--
 a-s-d-d-/-?+
-===DONE===

Zend/tests/bug26697.phpt

@@ -12,10 +12,8 @@ spl_autoload_register(function ($name) {
 var_dump(class_exists('NotExistingClass'));
 
 ?>
-===DONE===
 --EXPECT--
 {closure}(NotExistingClass)
 bool(false)
 {closure}(NotExistingClass), done
 bool(false)
-===DONE===

Zend/tests/bug26698.phpt

@@ -65,9 +65,7 @@ $p->callOne();
 $p->callTwo();
 $p->callThree();
 ?>
-===DONE===
 --EXPECT--
 Caught: NONE
 Caught: NONE
 Caught: NONE
-===DONE===

Zend/tests/bug26802.phpt

@@ -30,8 +30,6 @@ foo::$method();
 
 
 ?>
-===DONE===
 --EXPECT--
 global_func
 foo::foo_func
-===DONE===

Zend/tests/bug27304.phpt

@@ -16,8 +16,6 @@ Staticexample::test();
 $b->test();
 
 ?>
-===DONE===
 --EXPECT--
 bool(false)
 bool(false)
-===DONE===

Zend/tests/bug27669.phpt

@@ -10,7 +10,5 @@ Bug #27669 (PHP 5 didn't support all possibilities for calling static methods dy
 	$y[0] = 'hello';
 	A::{$y[0]}();
 ?>
-===DONE===
 --EXPECTF--
 Hello World
-===DONE===

Zend/tests/bug27798.phpt

@@ -32,7 +32,6 @@ var_dump(get_object_vars(new Base));
 var_dump(get_object_vars(new Child));
 
 ?>
-===DONE===
 --EXPECT--
 Base::__construct
 array(3) {
@@ -69,4 +68,3 @@ array(1) {
   ["Foo"]=>
   int(1)
 }
-===DONE===