tcf-agent: Don't download epl-v10.html just for LIC_FILES_CHKSUM validation

tcf-agent: Don't download epl-v10.html just for LIC_FILES_CHKSUM validation

* it's not part of sources, downloading some html from web is not better
  check then using meta/files/common-licenses/EPL-1.0
* http://www.eclipse.org/org/documents/epl-v10.html was changed, plain
  text looks the same, but html formating was changed (from MS Word
  export to valid XHTML 1.0, changing checksums for this new html
  would cause issues for people with old epl-v10.html already on
  PREMIRROR, so lets just remove it.

(From OE-Core rev: 22bce79652fc753a7b5d536664b744e110b5775a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>