message: refactor(image-stream): Remove Promise props resolve
  This removes `Bluebird.props()` from the image type handlers,
  as it's just a remnant when some properties in the return value
  were Promises that needed resolving.
  Change-Type: patch
  Connects To:
diff: @@ -54,7 +54,7 @@ module.exports = {
  * @returns {Promise}
  */
  'application/x-bzip2': (imagePath, options) => {
  - return Bluebird.props({
  + return {
  path: imagePath,
  archiveExtension: fileExtensions.getLastFileExtension(imagePath),
  extension: fileExtensions.getPenultimateFileExtension(imagePath),
  @@ -67,7 +67,7 @@ module.exports = {
  }
  },
  transform: unbzip2Stream()
  - })
  + }
  },
  /**
  @@ -94,7 +94,7 @@ module.exports = {
  }
  })
  }).then((uncompressedSize) => {
  - return Bluebird.props({
  + return {
  path: imagePath,
  archiveExtension: fileExtensions.getLastFileExtension(imagePath),
  extension: fileExtensions.getPenultimateFileExtension(imagePath),
  @@ -107,7 +107,7 @@ module.exports = {
  }
  },
  transform: zlib.createGunzip()
  - })
  + }
  })
  },
  @@ -223,7 +223,7 @@ module.exports = {
  * @returns {Promise}
  */
  'application/octet-stream': (imagePath, options) => {
  - return Bluebird.props({
  + return {
  path: imagePath,
  extension: fileExtensions.getLastFileExtension(imagePath),
  stream: fs.createReadStream(imagePath),
  @@ -235,7 +235,7 @@ module.exports = {
  }
  },
  transform: new PassThroughStream()
  - })
  + }
  }
  }
  