Remove dockerfile/editable test from main tests

The dockerfile test is used by test_editable, but should not be used
by the generated tests. Removing the verify script will prevent it
being run as part of the generated tests.

tests/dockerfile/editable/Dockerfile

@@ -5,7 +5,6 @@ RUN pip install --no-cache notebook
 CMD "/bin/sh"
 
 ADD change.sh /usr/local/bin/change.sh
-ADD verify verify
 
 ARG NB_UID
 ENV HOME /tmp

tests/dockerfile/editable/verify

@@ -1,3 +0,0 @@
-#!/bin/bash
-
-/usr/local/bin/change.sh