Remove old oauth-php library

3rdparty/oauth-php/LICENSE

3rdparty/oauth-php/README

3rdparty/oauth-php/library/OAuthDiscovery.php

3rdparty/oauth-php/library/OAuthException2.php

3rdparty/oauth-php/library/OAuthRequest.php

3rdparty/oauth-php/library/OAuthRequestLogger.php

3rdparty/oauth-php/library/OAuthRequestSigner.php

3rdparty/oauth-php/library/OAuthRequestVerifier.php

3rdparty/oauth-php/library/OAuthRequester.php

3rdparty/oauth-php/library/OAuthServer.php

3rdparty/oauth-php/library/OAuthSession.php

3rdparty/oauth-php/library/OAuthStore.php

...ty/oauth-php/library/body/OAuthBodyContentDisposition.php

...rty/oauth-php/library/body/OAuthBodyMultipartFormdata.php

3rdparty/oauth-php/library/discovery/xrds_parse.php

3rdparty/oauth-php/library/discovery/xrds_parse.txt

.../oauth-php/library/session/OAuthSessionAbstract.class.php

3rdparty/oauth-php/library/session/OAuthSessionSESSION.php

...p/library/signature_method/OAuthSignatureMethod.class.php

...brary/signature_method/OAuthSignatureMethod_HMAC_SHA1.php