Clean-up scripted test

modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/src/main/scala/Main.scala

@@ -27,6 +27,4 @@ object Main extends App {
     !argonautFound,
     "Expected not to find classes from argonaut"
   )
-
-  Files.write(new File("output").toPath, "OK".getBytes("UTF-8"))
 }

modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/test

@@ -1,5 +1,3 @@
-$ delete output
 > run
-$ exists output
 > publishLocal
 $ exec java -jar coursier launch io.get-coursier.test:sbt-coursier-all-exclude-dependencies_2.12:0.1.0-SNAPSHOT