Remove really old libmemcached versions. If anyone is using this old version they should be worried

Author: mkoppanen

.travis.yml

@@ -13,9 +13,9 @@ env:
     - LIBMEMCACHED_VERSION=1.0.7
     - LIBMEMCACHED_VERSION=1.0.6
     - LIBMEMCACHED_VERSION=1.0.2
-    - LIBMEMCACHED_VERSION=0.53
-    - LIBMEMCACHED_VERSION=0.49
-    - LIBMEMCACHED_VERSION=0.44
+    #- LIBMEMCACHED_VERSION=0.53
+    #- LIBMEMCACHED_VERSION=0.49
+    #- LIBMEMCACHED_VERSION=0.44
 addons:
     apt:
         packages: