default to no arrows

Summary:
as the last part of the new design, try to not have arrows
in the scrollbars by default (just change of default,
all the functionality is there)

Test Plan: default is correctly picked up

Reviewers: #plasma, #vdg, hpereiradacosta

Reviewed By: hpereiradacosta

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D3378

kstyle/breeze.kcfg

@@ -65,11 +65,11 @@
 
     <!-- scrollbar buttons -->
     <entry name="ScrollBarAddLineButtons" type="Int">
-      <default>1</default>
+      <default>0</default>
     </entry>
 
     <entry name="ScrollBarSubLineButtons" type="Int">
-      <default>1</default>
+      <default>0</default>
     </entry>
 
     <!-- mnemonics -->