Remove memory field from start int test

This would fail if anyone had their CAPI default memory field set
differently than the CLI int tests environments, removing as its not
what this test is trying to do.

integration/v7/isolated/start_command_test.go

@@ -187,7 +187,6 @@ var _ = Describe("start command", func() {
 					Eventually(session).Should(Say(`requested state:\s+started`))
 					Eventually(session).Should(Say(`type:\s+web`))
 					Eventually(session).Should(Say(`instances:\s+1/1`))
-					Eventually(session).Should(Say(`memory usage:\s+32M`))
 					Eventually(session).Should(Say(`\s+state\s+since\s+cpu\s+memory\s+disk\s+details`))
 					Eventually(session).Should(Say(`#0\s+(starting|running)\s+\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z`))