Simplify changelog.

debian/changelog

@@ -12,10 +12,9 @@ tails (2.5) unstable; urgency=medium
 
   * Security fixes
     - Upgrade Tor Browser to 6.0.3 based on Firefox 45.3. (Closes: #11611)
-    - Upgrade fonts-opensymbol to 2:102.6+LibO4.3.3-2+deb8u5.
     - Upgrade GIMP to 2.8.14-1+deb8u1.
     - Upgrade libav to 6:11.7-1~deb8u1.
-    - Upgrade libexpat1 to 2.1.0-6+deb8u3.
+    - Upgrade expat to 2.1.0-6+deb8u3.
     - Upgrade libgd3 to 2.1.0-5+deb8u6.
     - Upgrade libmodule-build-perl to 0.421000-2+deb8u1.
     - Upgrade perl to 5.20.2-3+deb8u6.