[pitivi] docs: Remove incomplete obsolete info

[Alexandru Băluț <alexbalut src gnome org>]

commit ec2962f8564932e663fae550ea5990204e3b86db
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Jan 6 12:50:53 2020 +0100

    docs: Remove incomplete obsolete info

 .../How_To_Hack_On_PiTiVi:_Two_Case_Studies.md     | 88 ----------------------
 docs/attic/PyGST_Tutorial.md                       | 10 +--
 .../{ => PyGST_Tutorial/Demos}/Audio_video.py.md   |  0
 .../{ => PyGST_Tutorial/Demos}/Cross-fade.py.md    |  0
 .../Demos}/Elements_basics.py.md                   |  0
 .../{ => PyGST_Tutorial/Demos}/Enhanced_demo.py.md |  0
 .../{ => PyGST_Tutorial/Demos}/Simple-effect.py.md |  0
 .../{Elements:_basics.md => Elements_basics.md}    |  0
 .../Position,_Duration,_and_Seeking.md             | 28 -------
 ...tates,_and_the_Bus.md => States_and_the_Bus.md} |  0
 10 files changed, 2 insertions(+), 124 deletions(-)
---
diff --git a/docs/attic/PyGST_Tutorial.md b/docs/attic/PyGST_Tutorial.md
index 40f9a8d5..3e697158 100644
--- a/docs/attic/PyGST_Tutorial.md
+++ b/docs/attic/PyGST_Tutorial.md
@@ -13,17 +13,11 @@ tutorial](http://pygstdocs.berlios.de/pygst-tutorial/index.html)
 5.  [Combining Audio and
     Video](PyGST_Tutorial/Combining_Audio_and_Video.md)
 6.  [States, and the
-    Bus](PyGST_Tutorial/States,_and_the_Bus.md) \*
-7.  [Position, Duration, and
-    Seeking](PyGST_Tutorial/Position,_Duration,_and_Seeking.md) \*
-8.  [How To Hack On PiTiVi: Two Case
-    Studies](How_To_Hack_On_PiTiVi:_Two_Case_Studies.md) \*
-
-(\*) Incomplete
+    Bus](PyGST_Tutorial/States_and_the_Bus.md)
 
 ### Creating New Elements
 
-1.  [Elements: basics](PyGST_Tutorial/Elements:_basics.md) \*
+1.  [Elements: basics](PyGST_Tutorial/Elements_basics.md) \*
 
 ## Demonstration Listings
 
diff --git a/docs/attic/Audio_video.py.md b/docs/attic/PyGST_Tutorial/Demos/Audio_video.py.md
similarity index 100%
rename from docs/attic/Audio_video.py.md
rename to docs/attic/PyGST_Tutorial/Demos/Audio_video.py.md
diff --git a/docs/attic/Cross-fade.py.md b/docs/attic/PyGST_Tutorial/Demos/Cross-fade.py.md
similarity index 100%
rename from docs/attic/Cross-fade.py.md
rename to docs/attic/PyGST_Tutorial/Demos/Cross-fade.py.md
diff --git a/docs/attic/Elements_basics.py.md b/docs/attic/PyGST_Tutorial/Demos/Elements_basics.py.md
similarity index 100%
rename from docs/attic/Elements_basics.py.md
rename to docs/attic/PyGST_Tutorial/Demos/Elements_basics.py.md
diff --git a/docs/attic/Enhanced_demo.py.md b/docs/attic/PyGST_Tutorial/Demos/Enhanced_demo.py.md
similarity index 100%
rename from docs/attic/Enhanced_demo.py.md
rename to docs/attic/PyGST_Tutorial/Demos/Enhanced_demo.py.md
diff --git a/docs/attic/Simple-effect.py.md b/docs/attic/PyGST_Tutorial/Demos/Simple-effect.py.md
similarity index 100%
rename from docs/attic/Simple-effect.py.md
rename to docs/attic/PyGST_Tutorial/Demos/Simple-effect.py.md
diff --git a/docs/attic/PyGST_Tutorial/Elements:_basics.md b/docs/attic/PyGST_Tutorial/Elements_basics.md
similarity index 100%
rename from docs/attic/PyGST_Tutorial/Elements:_basics.md
rename to docs/attic/PyGST_Tutorial/Elements_basics.md
diff --git a/docs/attic/PyGST_Tutorial/States,_and_the_Bus.md 
b/docs/attic/PyGST_Tutorial/States_and_the_Bus.md
similarity index 100%
rename from docs/attic/PyGST_Tutorial/States,_and_the_Bus.md
rename to docs/attic/PyGST_Tutorial/States_and_the_Bus.md