remove flickr_downloader submodule
Squashed 'modules/flickr/' content from commit e8c75f3

git-subtree-dir: modules/flickr
git-subtree-split: e8c75f36c44a73a60c6e38b1460b740820d0baf4
Merge commit 'c0577e907365700c6fe5a44c9d552141f27145cd' as 'modules/flickr'
remove tumblr-utils submodule
Squashed 'modules/tumblr/tumblr-utils/' content from commit a5dd11b

git-subtree-dir: modules/tumblr/tumblr-utils
git-subtree-split: a5dd11bf4e36484d2aba0ff090feb1320cf25a83
Merge commit 'fd309cee634d4247a3c6ef5433392f6aa89987e7' as 'modules/tumblr/tumblr-utils'