code: @RequestMapping(value = "builds/{buildId}/links/{targetBuildId}", method = RequestMethod.DELETE)
      public Build deleteBuildLink(@PathVariable ID buildId, @PathVariable ID targetBuildId) {
          Build build = structureService.getBuild(buildId);
          Build targetBuild = structureService.getBuild(targetBuildId);
          structureService.deleteBuildLink(build, targetBuild);
          return build;
      }
docs: Deletes a link between a build and another
  
  @param buildId       From this build...
  @param targetBuildId ... to this build
  @return List of builds