Temporarily remove imgcrypt in CRI to fix circular dependency

Signed-off-by: Derek McGowan <derek@mcg.dev>

vendor/github.com/containers/ocicrypt/reader.go

@@ -1,40 +0,0 @@
-/*
-   Copyright The ocicrypt Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ocicrypt
-
-import (
-	"io"
-)
-
-type readerAtReader struct {
-	r   io.ReaderAt
-	off int64
-}
-
-// ReaderFromReaderAt takes an io.ReaderAt and returns an io.Reader
-func ReaderFromReaderAt(r io.ReaderAt) io.Reader {
-	return &readerAtReader{
-		r:   r,
-		off: 0,
-	}
-}
-
-func (rar *readerAtReader) Read(p []byte) (n int, err error) {
-	n, err = rar.r.ReadAt(p, rar.off)
-	rar.off += int64(n)
-	return n, err
-}