Remove support for deployableFeature option

The deployableFeature option will create "standard eclipse update site
directory with feature content will be created under target folder" but
we already removed site-packaging from tycho for a while, if one wants
to archive similar a category.xml with eclipse-repository packaging
gives much more control and power to the user.

RELEASE_NOTES.md

@@ -78,6 +78,7 @@ If filtering provided artifacts is enabled, the repository references automatica
 using exclusion and inclusion patterns and therefore allows more fine-grained control which references are added.
 Additionally the automatically added references can be filter based on if they provide any of the filtered units or not.
 If `addOnlyProviding` is `true` repositories that don't provide any filtered unit are not added to the assembled repo.
+
 ```xml
 <plugin>
 	<groupId>org.eclipse.tycho</groupId>
@@ -98,6 +99,11 @@ If `addOnlyProviding` is `true` repositories that don't provide any filtered uni
 
 ```
 
+### Remove support for deployableFeature option
+
+The deployableFeature option will create "standard eclipse update site directory with feature content will be created under target folder" but we already removed site-packaging from Tycho for a while, if one wants to archive similar a category.xml with eclipse-repository packaging gives much more control and power to the user.
+
+
 ## 4.0.3
 
 ### new option to filter added repository-references when assembling a p2-repository

tycho-packaging-plugin/src/main/java/org/eclipse/tycho/packaging/PackageFeatureMojo.java

@@ -102,13 +102,6 @@ public class PackageFeatureMojo extends AbstractTychoPackagingMojo {
     @Parameter(property = "project.build.finalName", alias = "jarName", required = true)
     private String finalName;
 
-    /**
-     * If set to <code>true</code>, standard eclipse update site directory with feature content will
-     * be created under target folder.
-     */
-    @Parameter(defaultValue = "false")
-    private boolean deployableFeature = false;
-
     @Parameter(defaultValue = "${project.build.directory}/site")
     private File target;
 
@@ -200,10 +193,6 @@ public void execute() throws MojoExecutionException, MojoFailureException {
             }
 
             project.getArtifact().setFile(outputJar);
-
-            if (deployableFeature) {
-                assembleDeployableFeature();
-            }
         }
     }
 
@@ -278,11 +267,6 @@ private FileSet getManuallyIncludedFiles(BuildProperties buildProperties) {
         return getFileSet(basedir, buildProperties.getBinIncludes(), binExcludes);
     }
 
-    private void assembleDeployableFeature() throws MojoExecutionException {
-        UpdateSiteAssembler assembler = new UpdateSiteAssembler(plexus, target);
-		getTychoProjectFacet().getDependencyWalker(DefaultReactorProject.adapt(project)).walk(assembler);
-    }
-
     private void expandVersionQualifiers(Feature feature) throws MojoFailureException {
         ReactorProject reactorProject = DefaultReactorProject.adapt(project);
         feature.setVersion(reactorProject.getExpandedVersion());