[refactor] delete CreateHmacAlgorithmByHashOutputLen().

BUG=245025

Review URL: https://codereview.chromium.org/116963002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241195 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241195