Remove unused isc_astack unit

The isc_astack unit is now unused, so just remove it.

Author: oerdnj

lib/isc/Makefile.am

@@ -8,7 +8,6 @@ libisc_la_HEADERS =			\
 	include/isc/align.h		\
 	include/isc/ascii.h		\
 	include/isc/assertions.h	\
-	include/isc/astack.h		\
 	include/isc/async.h		\
 	include/isc/atomic.h		\
 	include/isc/attributes.h	\
@@ -122,7 +121,6 @@ libisc_la_SOURCES =		\
 	aes.c			\
 	ascii.c			\
 	assertions.c		\
-	astack.c		\
 	async.c			\
 	backtrace.c		\
 	base32.c		\

lib/isc/astack.c

@@ -33,9 +33,8 @@
 
 /* Core Types.  Alphabetized by defined type. */
 
-typedef struct isc_astack isc_astack_t;		 /*%< Array-based fast stack */
-typedef struct isc_buffer isc_buffer_t;		 /*%< Buffer */
-typedef ISC_LIST(isc_buffer_t) isc_bufferlist_t; /*%< Buffer List */
+typedef struct isc_buffer isc_buffer_t;			  /*%< Buffer */
+typedef ISC_LIST(isc_buffer_t) isc_bufferlist_t;	  /*%< Buffer List */
 typedef struct isc_constregion	   isc_constregion_t;	  /*%< Const region */
 typedef struct isc_consttextregion isc_consttextregion_t; /*%< Const Text Region
 							   */