patches: fix duplicate EmacsAccessibilityBuffer(InteractiveSpans)

Stub @implementation added in 0001 was never removed when 0004
added the full implementation, causing Clang to error:
  reimplementation of category 'InteractiveSpans'

Remove the stub block in 0004 (interactive span elements for Tab).

patches/0004-ns-add-interactive-span-elements-for-Tab.patch

@@ -1,4 +1,4 @@
-From e276b4cc0cda1504373656f664c39af7631208ad Mon Sep 17 00:00:00 2001
+From 9d99df6f95ac2011a1a9f3de448f2f0ec4c27145 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Wed, 4 Mar 2026 15:23:55 +0100
 Subject: [PATCH 5/9] ns: add interactive span elements for Tab
@@ -14,14 +14,32 @@ elements with an AXPress action that sends a synthetic TAB keystroke.
 (accessibilityChildrenInNavigationOrder): Return cached span array,
 rebuilding lazily when interactiveSpansDirty is set.
 ---
- src/nsterm.m | 293 +++++++++++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 293 insertions(+)
+ src/nsterm.m | 304 +++++++++++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 293 insertions(+), 11 deletions(-)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 84a32a05cb..c713943b30 100644
+index 84a32a05cb..b327102521 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -9385,6 +9385,299 @@ - (NSRect)accessibilityFrame
+@@ -7637,17 +7637,6 @@ - (id)accessibilityTopLevelUIElement
+ 
+ @end
+ 
+-/* Stub implementation of InteractiveSpans category.
+-   The full implementation is added in a later patch.  */
+-@implementation EmacsAccessibilityBuffer (InteractiveSpans)
+-
+-- (void)invalidateInteractiveSpans
+-{
+-  /* Stub: full implementation added in patch 0004.  */
+-}
+-
+-@end
+-
+ static BOOL
+ ns_ax_find_completion_overlay_range (struct buffer *b, ptrdiff_t point,
+ 				     ptrdiff_t *out_start,
+@@ -9385,6 +9374,299 @@ - (NSRect)accessibilityFrame
  
  @end