drop test for unsupported configuration

sbt/src/sbt-test/dependency-management/parent-ivy-settings/changes/ivysettings.xml

@@ -1,9 +0,0 @@
-<ivysettings>
-	<settings defaultResolver="chain"/>
-	<caches defaultCacheDir="${ivy.settings.dir}/target/cache"/>
-	<resolvers>
-	  <chain name="chain" returnFirst="true">
-		<ibiblio name="scala-tools-releases" m2compatible="true" root="http://scala-tools.org/repo-releases/"/>
-	  </chain>
-	</resolvers>
-</ivysettings> 

sbt/src/sbt-test/dependency-management/parent-ivy-settings/project/SettingsTest.scala

@@ -1,16 +0,0 @@
-	import sbt._
-	import Keys._
-
-object SettingsTest extends Build
-{
-	lazy val parent: Project = Project("Parent", file(".")) aggregate(sub) settings(
-		externalIvySettings(),
-		ivyPaths <<= baseDirectory( dir => new IvyPaths(dir, Some(dir / "ivy-home")))
-	)
-	lazy val sub: Project = Project("Sub", file("sub"), delegates = parent :: Nil) dependsOn(compiler) aggregate(compiler) settings(
-		externalIvySettings()
-	)
-	lazy val compiler = Project("Compiler", file("compiler"), delegates = sub :: Nil) settings(
-		libraryDependencies <+= scalaVersion( "org.scala-lang" % "scala-compiler" % _ )
-	)
-}

sbt/src/sbt-test/dependency-management/parent-ivy-settings/test

@@ -1,13 +0,0 @@
--> update
-> clean
-$ copy-file changes/ivysettings.xml sub/ivysettings.xml
-
-> update
-> clean
-
-$ delete sub/ivysettings.xml
--> update
-> clean
-
-$ copy-file changes/ivysettings.xml ivysettings.xml
-> update