build: remove unused c/css code

data/Makefile.am

@@ -22,7 +22,6 @@ EXTRA_DIST=                     \
   ui/menus.ui                   \
   ui/nav_bar.ui                 \
   ui/new-event.ui               \
-  ui/viewport.ui                \
   theme/gtk-styles.css          \
   $(desktop_in_files)           \
   $(gsettingsschema_in_files)

data/calendar.gresource.xml

@@ -4,7 +4,6 @@
     <file alias="edit-dialog.ui" compressed="true" preprocess="xml-stripblanks">ui/edit-dialog.ui</file>
     <file alias="menus.ui" compressed="true" preprocess="xml-stripblanks">ui/menus.ui</file>
     <file alias="nav_bar.ui" compressed="true" preprocess="xml-stripblanks">ui/nav_bar.ui</file>
-    <file alias="viewport.ui" compressed="true" preprocess="xml-stripblanks">ui/viewport.ui</file>
     <file alias="new-event.ui" compressed="true" preprocess="xml-stripblanks">ui/new-event.ui</file>
     <file alias="gtk-styles.css" compressed="true">theme/gtk-styles.css</file>
   </gresource>

data/theme/gtk-styles.css

@@ -14,17 +14,6 @@
     padding: 12px;
 }
 
-.view-overlay .frame {
-    border-left: 0;
-    border-right: 0;
-    border-bottom: 0;
-}
-
-.view-overlay .scrollbar.trough {
-    background-color: transparent;
-    background-image: none;
-}
-
 .calendar-view {
     padding: 6px;
     font: 10;
@@ -62,11 +51,4 @@ GcalEventWidget.color-light {
 
 GcalEventWidget.color-light:backdrop {
     color: rgba(0, 0, 0, 0.3);
-}
-
-.event-details .frame {
-    border-style: solid;
-    border-color: @borders;
-    border-width: 0.5px;
-    border-radius: 0;
 }

data/ui/viewport.ui

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-  <!-- interface-requires gtk+ 3.10 -->
-  <template class="GcalViewport" parent="GtkOverlay">
-    <property name="visible">True</property>
-    <property name="can_focus">False</property>
-    <style>
-      <class name="view-overlay"/>
-    </style>
-    <child type="overlay">
-      <object class="GtkScrollbar" id="vscrollbar">
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="orientation">vertical</property>
-        <property name="halign">end</property>
-        <property name="vexpand">True</property>
-      </object>
-    </child>
-    <child type="overlay">
-      <object class="GtkScrollbar" id="hscrollbar">
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="orientation">horizontal</property>
-        <property name="valign">end</property>
-        <property name="hexpand">True</property>
-      </object>
-    </child>
-    <child>
-      <object class="GtkViewport" id="viewport">
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-      </object>
-    </child>
-  </template>
-</interface>