codec_kit: Remove Perform

* Undocumented and apparently unuseful pattern.

headers/os/codec/DecoderPlugin.h

@@ -48,8 +48,6 @@ public:
 
 			void				SetChunkProvider(ChunkProvider* provider);
 
-	virtual status_t			Perform(perform_code code, void* data);
-
 private:
 			ChunkProvider*		fChunkProvider;
 

headers/os/codec/EncoderPlugin.h

@@ -80,8 +80,6 @@ public:
 
 			void				SetChunkWriter(ChunkWriter* writer);
 
-	virtual status_t			Perform(perform_code code, void* data);
-
 private:
 			ChunkWriter*		fChunkWriter;
 

headers/os/codec/ReaderPlugin.h

@@ -52,8 +52,6 @@ public:
 
 			BDataIO*			Source() const;
 
-	virtual status_t			Perform(perform_code code, void* data);
-
 private:
 			void				_Setup(BDataIO* source);
 

headers/os/codec/WriterPlugin.h

@@ -39,8 +39,6 @@ public:
 
 			BDataIO*			Target() const;
 
-	virtual status_t			Perform(perform_code code, void* data);
-
 private:
 			void				_Setup(BDataIO* target);
 

src/kits/codec/DecoderPlugin.cpp

@@ -42,13 +42,6 @@ Decoder::SetChunkProvider(ChunkProvider *provider)
 }
 
 
-status_t
-Decoder::Perform(perform_code code, void* _data)
-{
-	return B_OK;
-}
-
-
 void Decoder::_ReservedDecoder1() {}
 void Decoder::_ReservedDecoder2() {}
 void Decoder::_ReservedDecoder3() {}

src/kits/codec/EncoderPlugin.cpp

@@ -101,13 +101,6 @@ Encoder::SetChunkWriter(ChunkWriter* writer)
 // #pragma mark - FBC padding
 
 
-status_t
-Encoder::Perform(perform_code code, void* data)
-{
-	return B_OK;
-}
-
-
 void Encoder::_ReservedEncoder1() {}
 void Encoder::_ReservedEncoder2() {}
 void Encoder::_ReservedEncoder3() {}

src/kits/codec/ReaderPlugin.cpp

@@ -67,13 +67,6 @@ Reader::_Setup(BDataIO *source)
 }
 
 
-status_t
-Reader::Perform(perform_code code, void* _data)
-{
-	return B_OK;
-}
-
-
 void Reader::_ReservedReader1() {}
 void Reader::_ReservedReader2() {}
 void Reader::_ReservedReader3() {}

src/kits/codec/WriterPlugin.cpp

@@ -37,13 +37,6 @@ Writer::_Setup(BDataIO* target)
 }
 
 
-status_t
-Writer::Perform(perform_code code, void* data)
-{
-	return B_OK;
-}
-
-
 void Writer::_ReservedWriter1() {}
 void Writer::_ReservedWriter2() {}
 void Writer::_ReservedWriter3() {}