docs: Jackson is unable to maintain stable Javadocs (#1265)

Author: elharo

google-http-client-jackson2/pom.xml

@@ -17,8 +17,7 @@
         <artifactId>maven-javadoc-plugin</artifactId>
         <configuration>
           <links>
-            <link>http://download.oracle.com/javase/7/docs/api/</link>
-            <link>http://fasterxml.github.com/jackson-core/javadoc/${project.jackson-core2.version}/</link>
+            <link>https://download.oracle.com/javase/7/docs/api/</link>
           </links>
           <doctitle>${project.name} ${project.version}</doctitle>
           <windowtitle>${project.artifactId} ${project.version}</windowtitle>

pom.xml

@@ -422,9 +422,8 @@
             <phase>site</phase>
             <configuration>
               <links>
-                <link>http://download.oracle.com/javase/7/docs/api/</link>
-                <link>http://cloud.google.com/appengine/docs/java/javadoc</link>
-                <link>http://fasterxml.github.com/jackson-core/javadoc/${project.jackson-core2.version}/</link>
+                <link>https://download.oracle.com/javase/7/docs/api/</link>
+                <link>https://cloud.google.com/appengine/docs/java/javadoc</link>
                 <link>https://static.javadoc.io/doc/com.google.code.gson/gson/${project.gson.version}</link>
                 <link>https://google.github.io/guava/releases/${project.guava.version}/api/docs/</link>
               </links>