remove .size from startup.s, so linker.ld doesn't need gap-bridge symbols

targets/startup.s

@@ -55,4 +55,7 @@ _start:
 
 # Set the size of the _start symbol to the current location '.' minus its start.
 # This is useful when debugging or when you implement call tracing.
-.size _start, . - _start
+
+# If this is enabled, the linker.ld needs to define a symbol before the .text segment.
+# Otherwise, there's a gap that prevents FAIL from disassembling the AOT.
+# .size _start, . - _start