qvm-copy-to-vm: drop invalid option

There is no qvm-run --filter-escape-chars-stderr

Fixes: b33b09a "qvm-copy-to-vm: disable wait for GUI session"
(cherry picked from commit d0a2938)

file-copy-vm/qvm-copy-to-vm

@@ -36,7 +36,7 @@ mkfifo -- "$RESPONSE"
 
 # can't use $@ with --localcmd, and $* would fail on whitespace
 /usr/lib/qubes/qfile-dom0-agent "$@" <"$RESPONSE" |
-qvm-run --no-gui --filter-escape-chars-stderr --pass-io --service -- "$VM" "qubes.Filecopy" >"$RESPONSE"
+qvm-run --no-gui --pass-io --service -- "$VM" "qubes.Filecopy" >"$RESPONSE"
 
 if [ "${0##*/}" = "qvm-move-to-vm" ]; then
 	rm -rf -- "$@"