Remove obsolete protocol specification

The one at https://www.github.com/SampleEnvironment/SECoP
is the correct version!

Change-Id: I4f8a9c3b40ea4e1f3ecea8b7b491dd96cb04d009
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21437
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

doc/source/facility/demo/cryo.rst

@@ -0,0 +1,6 @@
+Demo cryostat
+=============
+
+.. automodule:: secop_demo.cryo
+    :members:
+

doc/source/facility/demo/index.rst

@@ -0,0 +1,12 @@
+Demo
+====
+
+Specific sample environments
+----------------------------
+
+.. toctree::
+   :maxdepth: 3
+
+   cryo
+   test
+

doc/source/facility/demo/test.rst

@@ -0,0 +1,6 @@
+Test devices
+=============
+
+.. automodule:: secop_demo.test
+    :members:
+

doc/source/facility/ess/epics.rst

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+EPICS modules
+=============
+
+.. automodule:: secop_ess.epics
+    :members:
+

doc/source/facility/ess/index.rst

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+ESS
+===
+
+Frameworks
+----------
+
+.. toctree::
+   :maxdepth: 3
+
+   epics
+

doc/source/facility/index.rst

@@ -0,0 +1,9 @@
+Facility specific functionalities
+=================================
+
+.. toctree::
+   :maxdepth: 3
+
+   demo/index
+   mlz/index
+   ess/index

doc/source/facility/mlz/amagnet.rst

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+ANTARES magnet (amagnet)
+========================
+
+.. automodule:: secop_mlz.amagnet
+    :members:
+

doc/source/facility/mlz/entangle.rst

@@ -0,0 +1,6 @@
+Entangle
+========
+
+.. automodule:: secop_mlz.entangle
+    :members:
+

doc/source/facility/mlz/index.rst

@@ -0,0 +1,20 @@
+MLZ
+===
+
+Frameworks
+----------
+
+.. toctree::
+   :maxdepth: 3
+
+   entangle
+
+
+Specific sample environments
+----------------------------
+
+.. toctree::
+   :maxdepth: 3
+
+   amagnet
+