remove unneded header doc

docs/modules/wiki/wiki_header.adoc

@@ -1,108 +0,0 @@
-= Anatomy of a Wiki Header
-:author: mitm
-:revnumber:
-:revdate: 2017-09-08T23:24:11.262Z
-:relfileprefix: ../
-:imagesdir: ..
-:experimental:
-ifdef::env-github,env-browser[:outfilesuffix: .adoc]
-
-All wiki documents use these header attributes. Optional attributes can be left blank following the kbd:[:] colon symbol.
-
-[source,subs="+macros"]
-----
-= Enter Document Title Here
-:author:
-:revnumber:
-:revdate:
-:relfileprefix: ../../
-:imagesdir: ../..
-:experimental:
-:link-javadoc: pass:[https://javadoc.jmonkeyengine.org]
-:stylesheet: twemoji-awesome.css
-ifdef++::++env-github,env-browser[:outfilesuffix: .adoc]
-----
-
-== =
-
-Mandatory. Title of your document.
-
-== :author:
-
-Optional. Document author.
-
-[IMPORTANT]
-====
-Optional Author and Revision information immediately follows the header title.
-====
-
-== :revnumber:
-
-Optional. Revision number.
-
-== :revdate:
-
-Optional. Revision Date
-
-== :relfileprefix:
-
-Optional. Enter a path to the "`asciidoc`" folder if using cross reference links.
-
-TIP: Use `Tree View` (kbd:[ctrl]+kbd:[\ ] or `menu:View[Toggle Tree View]`) to locate the "`asciidoc`" folder if using the link:https://atom.io/[Atom editor].
-
-In the example below, "`asciidoc`" is two folders above the folder this file is located in.
-
-```
-:relfileprefix: ../../
-```
-
-== :imagesdir:
-
-Optional. Enter a path to the "images" folder if using image links.
-
-TIP: Use `Tree View` (kbd:[ctrl]+kbd:[\ ] or `menu:View[Toggle Tree View]`) to locate the "`images`" folder if using the link:https://atom.io/[Atom editor].
-
-In the example below, "`images`" is two folders above the folder this file is located in. Note the missing kbd:[/] forward slash.
-
-```
-:imagesdir: ../..
-```
-
-[TIP]
-====
-A simple way to determine the location of the "asciidoc" and "images" folder in the Atom editor is first save the file to its new location, then in `Tree View` (kbd:[ctrl]+kbd:[\ ] or `menu:View[Toggle Tree View]`), btn:[RMB] select the saved file and select btn:[Copy Project Path].
-
-Temporarily paste this into your document to see where the "`asciidoc`" folder is located.
-
-For example: `src\docs\asciidoc\jme3\advanced\3d_models.adoc`
-
-In this example, "asciidoc" is located two folders above the "advanced" folder `3d_models.adoc` resides in.
-
-You can find this same folder information using link:https://github.com/jMonkeyEngine/wiki/blob/master/docs/modules/ROOT/pages/jme3/advanced/3d_models.adoc[GitHub].
-====
-
-The "`images`" folder resides in the same folder as the "`asciidoc`" folder so it has the same setting minus the kbd:[/ ] forward slash.
-
-== :experimental:
-
-Optional. Leave this blank, i.e do not set a value for this attribute if using it. This is the experimental attribute that allows the use of link:http://asciidoctor.org/docs/user-manual/#user-interface-macros[User Interface Macros]. You use these macros for creating keyboard shortcuts, displaying menu selections and UI buttons.
-
-== :link-javadoc:
-
-Optional. This is the global attribute for the jME javadocs. You set this if you are *overriding* the default setting from the link:https://github.com/jMonkeyEngine/wiki/blob/9d0e4fd07d019c3d41c6b9e64b2a1a5b7e0ed774/build.gradle#L39[build.gradle] file. You can use the default `pass:[{link-javadoc}]` attribute directly in any document you write, as is shown in the following example, without adding anything to the header.
-
-```
-link:{link-javadoc}/com/jme3/app/state/BaseAppState.html[BaseAppState]
-```
-
-If you override the variable in the header of the document, that value will be used instead.
-
-== :stylesheet: twemoji-awesome.css
-
-Optional. Adding this attribute will allow the use of emoji in the document.
-
-See: <<wiki/emoji#,Emoji Cheat Sheet>>
-
-== ifdef::env-github,env-browser[:outfilesuffix: .adoc]
-
-Mandatory. See link:http://asciidoctor.org/docs/user-manual/#navigating-between-source-files[Navigating Between Source Files] in the AsciiDoctor user manual. Leave this as written.