Remove unused values from MessageLayoutContainer (#4081)

.clang-tidy

@@ -38,6 +38,8 @@ CheckOptions:
     value:           camelBack
   - key:             readability-identifier-naming.MemberCase
     value:           camelBack
+  - key:             readability-identifier-naming.PrivateMemberIgnoredRegexp
+    value:           .*
   - key:             readability-identifier-naming.PrivateMemberSuffix
     value:           _
   - key:             readability-identifier-naming.UnionCase

src/messages/layouts/MessageLayoutContainer.hpp

@@ -45,10 +45,6 @@ struct Margin {
 struct MessageLayoutContainer {
     MessageLayoutContainer() = default;
 
-    Margin margin = {4, 8, 4, 8};
-    bool centered = false;
-    bool enableCompactEmotes = false;
-
     int getHeight() const;
     int getWidth() const;
     float getScale() const;
@@ -93,6 +89,8 @@ private:
     void _addElement(MessageLayoutElement *element, bool forceAdd = false);
     bool canCollapse();
 
+    const Margin margin = {4, 8, 4, 8};
+
     // variables
     float scale_ = 1.f;
     int width_ = 0;