Deleted slf4j.* from licenses/

Although it is in the target/lib/ directory, slf4j is not included in the
ZIP/tar files

core/licenses/slf4j-LICENSE.txt

@@ -1,24 +0,0 @@
-Copyright (c) 2004-2014 QOS.ch
-All rights reserved.
-
-Permission is hereby granted, free  of charge, to any person obtaining
-a  copy  of this  software  and  associated  documentation files  (the
-"Software"), to  deal in  the Software without  restriction, including
-without limitation  the rights to  use, copy, modify,  merge, publish,
-distribute,  sublicense, and/or sell  copies of  the Software,  and to
-permit persons to whom the Software  is furnished to do so, subject to
-the following conditions:
-
-The  above  copyright  notice  and  this permission  notice  shall  be
-included in all copies or substantial portions of the Software.
-
-THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
-EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
-MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-

core/licenses/slf4j-NOTICE.txt

@@ -1 +0,0 @@
- 

core/licenses/slf4j-api-1.6.2.jar.sha1

@@ -1 +0,0 @@
-8619e95939167fb37245b5670135e4feb0ec7d50