Remove ISC_MEM_DEBUGSIZE and ISC_MEM_DEBUGRECORD

The ISC_MEM_DEBUGSIZE and ISC_MEM_DEBUGCTX did sanity checks on matching
size and memory context on the memory returned to the allocator.  Those
will no longer needed when most of the allocator will be replaced with
jemalloc.

bin/tests/system/runtime/tests.sh

@@ -15,7 +15,7 @@
 set -e
 
 RNDCCMD="$RNDC -c ../common/rndc.conf -p ${CONTROLPORT} -s"
-NAMED_DEFAULT_ARGS="-m record,size,mctx -d 99 -g -U 4"
+NAMED_DEFAULT_ARGS="-m record -d 99 -g -U 4"
 
 kill_named() {
 	pidfile="${1}"