build: remove org.gnome.sysprof3 gsettings schema

We don't use this anymore, so we can just delete it.

data/meson.build

@@ -3,10 +3,6 @@ if get_option('gtk') and get_option('libsysprof')
     install_dir: join_paths(datadir, 'mime/packages')
   )
 
-  install_data('org.gnome.sysprof3.gschema.xml',
-    install_dir: join_paths(datadir, 'glib-2.0/schemas')
-  )
-
   i18n.merge_file(
             input: 'org.gnome.Sysprof.appdata.xml.in',
            output: 'org.gnome.Sysprof.appdata.xml',

data/org.gnome.sysprof3.gschema.xml

@@ -1,19 +0,0 @@
-<schemalist>
-  <schema id="org.gnome.sysprof3" path="/org/gnome/sysprof/" gettext-domain="sysprof">
-    <key name="last-spawn-argv" type="s">
-      <default>''</default>
-      <summary>Last Spawn Program</summary>
-      <description>The last spawned program, which will be set in the UI upon restart of the application.</description>
-    </key>
-    <key name="last-spawn-inherit-env" type="b">
-      <default>true</default>
-      <summary>Last Spawn Inherit Environment</summary>
-      <description>If the last spawned environment inherits the parent environment.</description>
-    </key>
-    <key name="last-spawn-env" type="as">
-      <default>[]</default>
-      <summary>Last Spawn Environment</summary>
-      <description>The last spawned environment, which will be set in the UI upon restart of the application.</description>
-    </key>
-  </schema>
-</schemalist>

meson.build

@@ -220,7 +220,6 @@ configure_file(
 
 if get_option('gtk') and gnome.found()
   gnome.post_install(
-       glib_compile_schemas: true,
       gtk_update_icon_cache: true,
     update_desktop_database: true
   )