Update tests to remove invalid chunked encoding chunk-size

RFC7230 states the following:

     chunk          = chunk-size [ chunk-ext ] CRLF
                      chunk-data CRLF
     chunk-size     = 1*HEXDIG

Where chunk-ext is:

     chunk-ext      = *( ";" chunk-ext-name [ "=" chunk-ext-val ] )

Only if there is a chunk-ext should there be a `;` after the 1*HEXDIG.
And a chunk-ext that is empty is invalid.

tests/test_functional.py

@@ -322,7 +322,7 @@ def test_chunking_request_without_content(self):
             self.assertFalse("transfer-encoding" in headers)
 
     def test_chunking_request_with_content(self):
-        control_line = b"20;\r\n"  # 20 hex = 32 dec
+        control_line = b"20\r\n"  # 20 hex = 32 dec
         s = b"This string has 32 characters.\r\n"
         expected = s * 12
         header = b"GET / HTTP/1.1\r\nTransfer-Encoding: chunked\r\n\r\n"
@@ -341,7 +341,7 @@ def test_chunking_request_with_content(self):
             self.assertFalse("transfer-encoding" in headers)
 
     def test_broken_chunked_encoding(self):
-        control_line = b"20;\r\n"  # 20 hex = 32 dec
+        control_line = b"20\r\n"  # 20 hex = 32 dec
         s = b"This string has 32 characters.\r\n"
         to_send = b"GET / HTTP/1.1\r\nTransfer-Encoding: chunked\r\n\r\n"
         to_send += control_line + s + b"\r\n"
@@ -365,7 +365,7 @@ def test_broken_chunked_encoding(self):
             self.assertRaises(ConnectionClosed, read_http, fp)
 
     def test_broken_chunked_encoding_missing_chunk_end(self):
-        control_line = b"20;\r\n"  # 20 hex = 32 dec
+        control_line = b"20\r\n"  # 20 hex = 32 dec
         s = b"This string has 32 characters.\r\n"
         to_send = b"GET / HTTP/1.1\r\nTransfer-Encoding: chunked\r\n\r\n"
         to_send += control_line + s

tests/test_parser.py

@@ -155,7 +155,7 @@ def test_received_chunked_completed_sets_content_length(self):
             b"Transfer-Encoding: chunked\r\n"
             b"X-Foo: 1\r\n"
             b"\r\n"
-            b"1d;\r\n"
+            b"1d\r\n"
             b"This string has 29 characters\r\n"
             b"0\r\n\r\n"
         )