Bug 1720963 - Remove unused method declarations in nsTableFrame.h. r=layout-reviewers,jfkthame

Differential Revision: https://phabricator.services.mozilla.com/D120123

layout/tables/nsTableFrame.h

@@ -159,8 +159,6 @@ class nsTableFrame : public nsContainerFrame {
   virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
                     nsIFrame* aPrevInFlow) override;
 
-  static float GetTwipsToPixels(nsPresContext* aPresContext);
-
   // Return true if aParentReflowInput.frame or any of its ancestors within
   // the containing table have non-auto bsize. (e.g. pct or fixed bsize)
   static bool AncestorsHaveStyleBSize(const ReflowInput& aParentReflowInput);
@@ -186,8 +184,6 @@ class nsTableFrame : public nsContainerFrame {
   static void UnregisterPositionedTablePart(nsIFrame* aFrame,
                                             nsIFrame* aDestructRoot);
 
-  nsPoint GetFirstSectionOrigin(const ReflowInput& aReflowInput) const;
-
   /*
    * Notification that rowspan or colspan has changed for content inside a
    * table cell