Remove encode and decode for DataStream

av/data/stream.pyi

@@ -3,5 +3,4 @@ from av.packet import Packet
 from av.stream import Stream
 
 class DataStream(Stream):
-    def encode(self, frame: Frame | None = None) -> list[Packet]: ...
-    def decode(self, packet: Packet | None = None, count: int = 0) -> list[Frame]: ...
+    name: str | None

av/data/stream.pyx

@@ -4,19 +4,10 @@ cimport libav as lib
 cdef class DataStream(Stream):
     def __repr__(self):
         return (
-            f"<av.{self.__class__.__name__} #{self.index} {self.type or '<notype>'}/"
+            f"<av.{self.__class__.__name__} #{self.index} data/"
             f"{self.name or '<nocodec>'} at 0x{id(self):x}>"
         )
 
-    def __getattr__(self, name):
-        return getattr(self.codec_context, name)
-
-    def encode(self, frame=None):
-        return []
-
-    def decode(self, packet=None, count=0):
-        return []
-
     @property
     def name(self):
         cdef const lib.AVCodecDescriptor *desc = lib.avcodec_descriptor_get(self.ptr.codecpar.codec_id)