Revert "assert streamed content (#45288)" (#45293)

This reverts commit 373fe08.

Author: taylorotwell

src/Illuminate/Testing/TestResponse.php

@@ -572,19 +572,6 @@ public function assertContent($value)
         return $this;
     }
 
-    /**
-     * Assert that the given string matches the streamed response content.
-     *
-     * @param  $value
-     * @return $this
-     */
-    public function assertStreamedContent($value)
-    {
-        PHPUnit::assertSame($value, $this->streamedContent());
-
-        return $this;
-    }
-
     /**
      * Assert that the given string or array of strings are contained within the response.
      *

tests/Testing/TestResponseTest.php

@@ -234,29 +234,6 @@ public function testAssertContent()
         }
     }
 
-    public function testAssertStreamedContent()
-    {
-        $response = TestResponse::fromBaseResponse(
-            (new StreamedResponse)->setContent('expected response data')
-        );
-
-        $this->assertStreamedContent('expected response data');
-
-        try {
-            $response->assertStreamedContent('expected');
-            $this->fail('xxxx');
-        } catch (AssertionFailedError $e) {
-            $this->assertSame('Failed asserting that two strings are identical.', $e->getMessage());
-        }
-
-        try {
-            $response->assertStreamedContent('expected response data with extra');
-            $this->fail('xxxx');
-        } catch (AssertionFailedError $e) {
-            $this->assertSame('Failed asserting that two strings are identical.', $e->getMessage());
-        }
-    }
-
     public function testAssertSee()
     {
         $response = $this->makeMockResponse([