Revert "[#972] Use min/max builtins"

This reverts commit 89784b2e0a.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

pkg/services/object/internal/client/client.go

@@ -343,7 +343,10 @@ func PayloadRange(ctx context.Context, prm PayloadRangePrm) (*PayloadRangeRes, e
 		return nil, new(apistatus.ObjectOutOfRange)
 	}
 
-	ln := min(prm.ln, maxInitialBufferSize)
+	ln := prm.ln
+	if ln > maxInitialBufferSize {
+		ln = maxInitialBufferSize
+	}
 
 	w := bytes.NewBuffer(make([]byte, ln))
 	_, err = io.CopyN(w, rdr, int64(prm.ln))