Update LICENSE.txt

Removed RCS file tags, remove old outdated contact info, removed comments about VtkFltk which is gone.

LICENSE.txt

@@ -1,10 +1,4 @@
 ShapeWorks: Particle-based Shape Correspondence and Visualization Software
-Joshua Cates [email protected]  
-Brig Bagley  [email protected]
-
-$Date: 2015/05/29 $
-$RCSfile: ShapeWorksLicense.txt,v $
-$Revision: 1.1.1.2 $
 
 For more information, please see: http://software.sci.utah.edu
 
@@ -30,9 +24,3 @@ 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.
-
-------------------
-
-PLEASE NOTE: Code in the directory src/deprecated/VtkFltk is included in this 
-distribution under the LGPL license.  Please see code/VtkFltk/README.txt 
-for more information.