[gtksourceview] styles: revert addition of struckthrough

[Christian Hergert <chergert src gnome org>]

commit 9892d93452bf2f7abd5e2c885664bd063dc7ace3
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 4 13:27:12 2019 -0800

    styles: revert addition of struckthrough
    
    Instead, this should be using a declarative definition so that
    style-schemes can style it appropriately.
    
    There may be some more base styles that can be relied on in the future,
    but we want to avoid declaring style like this from language specs.

 data/styles/classic.xml         | 1 -
 data/styles/cobalt.xml          | 1 -
 data/styles/kate.xml            | 1 -
 data/styles/oblivion.xml        | 1 -
 data/styles/solarized-dark.xml  | 1 -
 data/styles/solarized-light.xml | 1 -
 data/styles/tango.xml           | 1 -
 7 files changed, 7 deletions(-)
---
diff --git a/data/styles/classic.xml b/data/styles/classic.xml
index dee22a9e..d82110f5 100644
--- a/data/styles/classic.xml
+++ b/data/styles/classic.xml
@@ -81,7 +81,6 @@
   <style name="def:warning"                 background="yellow"/>
   <style name="def:note"                    foreground="blue" background="yellow" bold="true"/>
   <style name="def:net-address"             italic="true" underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/cobalt.xml b/data/styles/cobalt.xml
index 673cb84b..37a001bb 100644
--- a/data/styles/cobalt.xml
+++ b/data/styles/cobalt.xml
@@ -104,7 +104,6 @@
   <style name="def:net-address"             foreground="teal_blue" italic="false" underline="single"/>
   <style name="def:preprocessor"            foreground="light_grey"/>
   <style name="def:underlined"              underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/kate.xml b/data/styles/kate.xml
index 9183878e..5b416692 100644
--- a/data/styles/kate.xml
+++ b/data/styles/kate.xml
@@ -90,7 +90,6 @@
   <style name="def:error"                   foreground="red" underline="true"/>
   <style name="def:warning"                 foreground="brown" underline="true"/>
   <style name="def:net-address"             underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/oblivion.xml b/data/styles/oblivion.xml
index a5013675..22909c8d 100644
--- a/data/styles/oblivion.xml
+++ b/data/styles/oblivion.xml
@@ -106,7 +106,6 @@
   <style name="def:warning"                 foreground="aluminium1" background="plum1"/>
   <style name="def:note"                    background="butter1" foreground="aluminium4" bold="true"/>
   <style name="def:net-address"             italic="true" underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/solarized-dark.xml b/data/styles/solarized-dark.xml
index aefa210e..4b749bd7 100644
--- a/data/styles/solarized-dark.xml
+++ b/data/styles/solarized-dark.xml
@@ -89,7 +89,6 @@
   <style name="def:error"                   foreground="red" bold="true"/>
   <style name="def:note"                    foreground="magenta" bold="true"/>
   <style name="def:net-address"             italic="true" underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/solarized-light.xml b/data/styles/solarized-light.xml
index e929e673..80688083 100644
--- a/data/styles/solarized-light.xml
+++ b/data/styles/solarized-light.xml
@@ -88,7 +88,6 @@
   <style name="def:error"                   foreground="red" bold="true"/>
   <style name="def:note"                    foreground="magenta" bold="true"/>
   <style name="def:net-address"             italic="true" underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--
diff --git a/data/styles/tango.xml b/data/styles/tango.xml
index 1b71d067..10084280 100644
--- a/data/styles/tango.xml
+++ b/data/styles/tango.xml
@@ -93,7 +93,6 @@
   <style name="def:warning"                 background="plum1"/>
   <style name="def:note"                    background="orange1" bold="true"/>
   <style name="def:net-address"             italic="true" underline="single"/>
-  <style name="def:struckthrough"           strikethrough="true"/>
 
   <!-- Heading styles, uncomment to enable -->
   <!--