Remove EvictionsProcessor and corresponding test

Issue with evictions could not be solved with SBT import. It needs to be
done in compilation process.

Counter-example:

    project A has lib-1.0
    project B depends on A and has lib-1.1
    project C depends on A and has lib-1.2

build.sbt

@@ -6,7 +6,7 @@ def newProject(projectName: String): Project =
     .settings(
       name := "sbt-structure-" + projectName,
       organization := "org.jetbrains",
-      version := "4.3.1",
+      version := "4.3.2",
       licenses += ("Apache-2.0", url("http://www.apache.org/licenses/LICENSE-2.0.html")),
       unmanagedSourceDirectories in Compile += baseDirectory.value.getParentFile / "shared" / "src" / "main" / "scala",
       publishMavenStyle := false

extractor/src/main/scala/org/jetbrains/sbt/extractors/StructureExtractor.scala

@@ -1,7 +1,6 @@
 package org.jetbrains.sbt
 package extractors
 
-import org.jetbrains.sbt.processors.{UnusedLibrariesProcessor, EvictionsProcessor}
 import org.jetbrains.sbt.structure.StructureData
 import sbt._
 
@@ -24,10 +23,8 @@ object StructureExtractor extends Extractor {
   }
 
   private def extract(acceptedProjectRefs: Seq[ProjectRef])(implicit state: State, options: Options): StructureData = {
-    val projectsData =
-      EvictionsProcessor.apply(acceptedProjectRefs, acceptedProjectRefs.flatMap(ProjectExtractor.apply(_)))
-    val repositoryData =
-      RepositoryExtractor.apply(acceptedProjectRefs).map(UnusedLibrariesProcessor.apply(projectsData))
+    val projectsData    = acceptedProjectRefs.flatMap(ProjectExtractor.apply(_))
+    val repositoryData  = RepositoryExtractor.apply(acceptedProjectRefs)
     val sbtVersion      = setting(Keys.sbtVersion).get
     val localCachePath  = Option(System.getProperty("sbt.ivy.home", System.getProperty("ivy.home")))
     StructureData(sbtVersion, projectsData, repositoryData, localCachePath)