[Defence] Clean up slides

defense/slides.md

@@ -243,97 +243,3 @@ These slides are licensed under the [CC BY-SA 4.0 License](https://creativecommo
 
 # Questions? Comments? Thoughts?
 
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-OLD
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-# Data Analysis: Edit Filters on EN Wikipedia
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-
-## What do most active filters do?
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-    135  repeating characters & tag, warn
-    30   "large deletion from article by new editors" & tag, warn
-    61   "new user removing references" & tag
-    18   "test type edits from clicking on edit bar" & deleted in Feb 2012
-    3    "new user blanking articles" & tag, warn
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-
-## Descriptive statistics
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-<img src="images/general_stats.png" class="left" alt="General filter statistics">
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-    all filters: 954
-    public filters: 361
-    Active public filters: 110
-    disabled (but not deleted) public filters: 35
-    deleted public filters: 216
-    hidden filters: 593
-    active hidden filters: 91
-    disabled (but not deleted) hidden filters: 118
-    deleted hidden filters: 384
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-Number of filter hits per month March 2009-March 2019
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-<img src="images/number-filter-hits.png" alt="Number of filter hits per month">
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-Filters Actions
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-<img src="images/all-filters-actions.png" alt="Filters Actions of all Filters">
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-Active Public Filters Actions
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-<img src="images/active-public-filters-actions.png" alt="Filters actions of active public filters">
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-Active Hidden Filters Actions
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-<img src="images/active-hidden-filters-actions.png" alt="Filters actions of active hidden filters">
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-## Manual classification
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-*vandalism*, *good faith* and *maintenance*
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-* difficult to distinguish
-* a lot of subcategories
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-Vandalism
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-    id  hits     public comment 
-   	46	356945	 "Poop" vandalism
-    365	85470	   Unusual changes to featured or good content
-    16	2005	   Prolific socker I
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-Good Faith
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-    id  hits    public comment 
-    180	175939	Large unwikified new article
-    98	39401	  Creating very short new article
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-maintenance
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-    id  hits  public comment 
-    577 1566  VisualEditor bugs: Strange icons
-    345	13832	Extraneous formatting from browser extension
-    942	1573	Log edits to protected pages
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