Remove Advantest-specific extensions

They are now maintained in a separate git repository.

Author: travkin79

flexmark-all/src/assembly/bin.xml

@@ -33,7 +33,6 @@
                 <include>com.vladsch.flexmark:flexmark-ext-ins</include>
                 <include>com.vladsch.flexmark:flexmark-ext-macros</include>
                 <include>com.vladsch.flexmark:flexmark-ext-media-tags</include>
-                <include>com.vladsch.flexmark:flexmark-ext-plantuml</include>
                 <include>com.vladsch.flexmark:flexmark-ext-resizable-image</include>
                 <include>com.vladsch.flexmark:flexmark-ext-xwiki-macros</include>
                 <include>com.vladsch.flexmark:flexmark-ext-superscript</include>