kernel: remove deprecated STACK EXTERN macros

These macros have been deprecated since v3.2.0. So remove them.

() K_KERNEL_STACK_EXTERN
   Use K_KERNEL_STACK_DECLARE instead.

() K_KERNEL_STACK_ARRAY_EXTERN
   Use K_KERNEL_STACK_ARRAY_DECLARE instead.

() K_KERNEL_PINNED_STACK_ARRAY_EXTERN
   Use K_KERNEL_PINNED_STACK_ARRAY_DECLARE instead.

() K_THREAD_STACK_EXTERN
   Use K_THREAD_STACK_DECLARE instead.

() K_THREAD_STACK_ARRAY_EXTERN
   Use K_THREAD_STACK_ARRAY_DECLARE instead.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

include/zephyr/kernel/thread_stack.h

@@ -153,51 +153,6 @@ static inline char *z_stack_ptr_align(char *ptr)
 	extern struct z_thread_stack_element \
 		sym[nmemb][Z_KERNEL_STACK_LEN(size)]
 
-/**
- * @brief Obtain an extern reference to a stack
- *
- * This macro properly brings the symbol of a thread stack defined
- * elsewhere into scope.
- *
- * @deprecated Use @c K_KERNEL_STACK_DECLARE() instead.
- *
- * @param sym Thread stack symbol name
- */
-#define K_KERNEL_STACK_EXTERN(sym) __DEPRECATED_MACRO \
-	extern k_thread_stack_t sym[]
-
-/**
- * @brief Obtain an extern reference to a stack array
- *
- * This macro properly brings the symbol of a stack array defined
- * elsewhere into scope.
- *
- * @deprecated Use @c K_KERNEL_STACK_ARRAY_DECLARE() instead.
- *
- * @param sym Thread stack symbol name
- * @param nmemb Number of stacks defined
- * @param size Size of the stack memory region
- */
-#define K_KERNEL_STACK_ARRAY_EXTERN(sym, nmemb, size) __DEPRECATED_MACRO \
-	extern struct z_thread_stack_element \
-		sym[nmemb][Z_KERNEL_STACK_LEN(size)]
-
-/**
- * @brief Obtain an extern reference to a pinned stack array
- *
- * This macro properly brings the symbol of a pinned stack array
- * defined elsewhere into scope.
- *
- * @deprecated Use @c K_KERNEL_PINNED_STACK_ARRAY_DECLARE() instead.
- *
- * @param sym Thread stack symbol name
- * @param nmemb Number of stacks defined
- * @param size Size of the stack memory region
- */
-#define K_KERNEL_PINNED_STACK_ARRAY_EXTERN(sym, nmemb, size) __DEPRECATED_MACRO \
-	extern struct z_thread_stack_element \
-		sym[nmemb][Z_KERNEL_STACK_LEN(size)]
-
 /**
  * @brief Define a toplevel kernel stack memory region in specified section
  *
@@ -342,8 +297,6 @@ static inline char *Z_KERNEL_STACK_BUFFER(k_thread_stack_t *sym)
 #define Z_THREAD_STACK_BUFFER		Z_KERNEL_STACK_BUFFER
 #define K_THREAD_STACK_DECLARE		K_KERNEL_STACK_DECLARE
 #define K_THREAD_STACK_ARRAY_DECLARE	K_KERNEL_STACK_ARRAY_DECLARE
-#define K_THREAD_STACK_EXTERN		K_KERNEL_STACK_EXTERN
-#define K_THREAD_STACK_ARRAY_EXTERN	K_KERNEL_STACK_ARRAY_EXTERN
 #define K_THREAD_PINNED_STACK_DEFINE	K_KERNEL_PINNED_STACK_DEFINE
 #define K_THREAD_PINNED_STACK_ARRAY_DEFINE \
 					K_KERNEL_PINNED_STACK_ARRAY_DEFINE
@@ -467,35 +420,6 @@ static inline char *Z_KERNEL_STACK_BUFFER(k_thread_stack_t *sym)
 	extern struct z_thread_stack_element \
 		sym[nmemb][K_THREAD_STACK_LEN(size)]
 
-/**
- * @brief Obtain an extern reference to a stack
- *
- * This macro properly brings the symbol of a thread stack defined
- * elsewhere into scope.
- *
- * @deprecated Use @c K_THREAD_STACK_DECLARE() instead.
- *
- * @param sym Thread stack symbol name
- */
-#define K_THREAD_STACK_EXTERN(sym) __DEPRECATED_MACRO \
-	extern k_thread_stack_t sym[]
-
-/**
- * @brief Obtain an extern reference to a thread stack array
- *
- * This macro properly brings the symbol of a stack array defined
- * elsewhere into scope.
- *
- * @deprecated Use @c K_THREAD_STACK_ARRAY_DECLARE() instead.
- *
- * @param sym Thread stack symbol name
- * @param nmemb Number of stacks defined
- * @param size Size of the stack memory region
- */
-#define K_THREAD_STACK_ARRAY_EXTERN(sym, nmemb, size) __DEPRECATED_MACRO \
-	extern struct z_thread_stack_element \
-		sym[nmemb][K_THREAD_STACK_LEN(size)]
-
 /**
  * @brief Return the size in bytes of a stack memory region
  *