minor cleanup for pom

Author: cowtowncoder

guava/pom.xml

@@ -26,14 +26,11 @@ Guava (http://code.google.com/p/guava-libraries/) types (currently mostly just c
   </contributors>
 
   <properties>
-    <!-- 09-Feb-2016, tatu: For Jackson 2.9, move guava from 16 to 18 -->
     <!-- 19-Jul-2019, tatu: and for 2.10, 18.0 to 20.0 (last pre-Java8 version) -->
-    <!-- 02-Aug-2020, tatu: 2.12 raises baseline to 21.0 -->
+    <!-- 02-Aug-2020, tatu: 2.12 raises baseline from 20.0 to 21.0 -->
     <version.guava>21.0</version.guava>
 
-    <!-- 30-Oct-2018, tatu: as per [datatypes-collections#34], allow up to 25 -->
-    <!-- 19-Jul-2019, tatu: and why not further? -->
-    <!-- 31-Jul-2020, tatu: remove upper limit for Jackson 2.12 -->
+    <!-- 31-Jul-2020, tatu: remove upper limit for Jackson 2.12; tested up to 29.0-jre -->
     <version.guava.osgi>[${version.guava}.0,99)</version.guava.osgi>
 
     <!-- Generate PackageVersion.java into this directory. -->