Remove Symfony3 specific code (#60)

Symfony3 is no longer supported as of #57

Author: theofidry

tests/ParallelizationIntegrationTest.php

@@ -204,38 +204,20 @@ public function test_it_can_run_the_command_with_one_process_as_child_process():
 
         $actual = $this->getOutput();
 
-        if ($this->isSymfony3()) {
-            self::assertSame(
-                <<<'EOF'
-Processing 2 movies in segments of 50, batches of 50, 1 round, 1 batch in 1 process
-
- 0/2 [>---------------------------]   0% < 1 sec/< 1 sec 10.0 MiB
- 1/2 [==============>-------------]  50% < 1 sec/< 1 sec 10.0 MiB
- 2/2 [============================] 100% < 1 sec/< 1 sec 10.0 MiB
-
-Processed 2 movies.
-
-EOF
-                ,
-                $actual,
-                'Expected logs to be identical'
-            );
-        } else {
-            self::assertSame(
-                <<<'EOF'
+        self::assertSame(
+            <<<'EOF'
 Processing 2 movies in segments of 50, batches of 50, 1 round, 1 batch in 1 process
 
- 0/2 [>---------------------------]   0% < 1 sec/< 1 sec 10.0 MiB
- 2/2 [============================] 100% < 1 sec/< 1 sec 10.0 MiB
+0/2 [>---------------------------]   0% < 1 sec/< 1 sec 10.0 MiB
+2/2 [============================] 100% < 1 sec/< 1 sec 10.0 MiB
 
 Processed 2 movies.
 
 EOF
-                ,
-                $actual,
-                'Expected logs to be identical'
-            );
-        }
+            ,
+            $actual,
+            'Expected logs to be identical'
+        );
     }
 
     private function getOutput(): string
@@ -250,9 +232,4 @@ private function getOutput(): string
 
         return str_replace(PHP_EOL, "\n", $output);
     }
-
-    private function isSymfony3(): bool
-    {
-        return Kernel::VERSION_ID < 40000;
-    }
 }