NOTICK Remove memory leak endurance test (#6514)

Remove memory leak endurance test as it spends 8 minutes testing a single failure case that's not end user visible,
and ultimately manifests elsewhere in test failures (which is where this came from in the beginning). It was a good
idea to confirm the change fixed the issue, but this isn't critical enough to retain.

node/src/integration-test-slow/kotlin/net/corda/node/endurance/NodesStartStopSingleVmTests.kt

@@ -1,30 +0,0 @@
-package net.corda.node.endurance
-
-import net.corda.core.utilities.getOrThrow
-import net.corda.testing.core.ALICE_NAME
-import net.corda.testing.core.BOB_NAME
-import net.corda.testing.driver.DriverParameters
-import net.corda.testing.driver.driver
-import org.junit.Test
-import org.junit.runner.RunWith
-import org.junit.runners.Parameterized
-
-@RunWith(Parameterized::class)
-class NodesStartStopSingleVmTests(@Suppress("unused") private val iteration: Int) {
-
-    companion object {
-        @JvmStatic
-        @Parameterized.Parameters(name = "iteration = {0}")
-        fun iterations(): Iterable<Array<Int>> {
-            return (1..60).map { arrayOf(it) }
-        }
-    }
-
-    @Test(timeout = 300_000)
-    fun nodesStartStop() {
-        driver(DriverParameters(notarySpecs = emptyList(), startNodesInProcess = true)) {
-            startNode(providedName = ALICE_NAME).getOrThrow()
-            startNode(providedName = BOB_NAME).getOrThrow()
-        }
-    }
-}