Revert "First stage of access logging middleware. Initially without any output appenders."

This reverts commit 73a1b172ed.

middlewares/accesslog/capture_request_reader.go

@@ -1,18 +0,0 @@
-package accesslog
-
-import "io"
-
-type captureRequestReader struct {
-	source io.ReadCloser
-	count  int64
-}
-
-func (r *captureRequestReader) Read(p []byte) (int, error) {
-	n, err := r.source.Read(p)
-	r.count += int64(n)
-	return n, err
-}
-
-func (r *captureRequestReader) Close() error {
-	return r.source.Close()
-}