clean up dependencies on apache commons libs and move those dependencies to impoort-package where necessary to be prepared for bundle symbolic name changes coming up

eclipse-extensions/org.springframework.ide.eclipse.buildship30/META-INF/MANIFEST.MF

@@ -14,7 +14,6 @@ Require-Bundle: org.eclipse.core.runtime,
  org.springsource.ide.eclipse.commons.frameworks.core,
  org.springframework.ide.eclipse.boot.wizard,
  org.eclipse.jface,
- org.apache.commons.io,
  org.eclipse.buildship.core;bundle-version="[3.0.0,4.0.0)";resolution:=optional,
  org.eclipse.ui.workbench,
  com.google.guava,