*/*: remove recallocarray() compat shims following import into libc

libopenbsd retains recallocarray() during bootstrapping for now
as it is needed for mandoc.

Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D52864

lib/libdiff/Makefile

@@ -8,7 +8,7 @@ INTERNALLIB=	# API not published or supported.
 
 SRCS=	diff_atomize_text.c diff_main.c diff_myers.c \
 	diff_patience.c diff_output.c diff_output_plain.c \
-	diff_output_unidiff.c diff_output_edscript.c recallocarray.c
+	diff_output_unidiff.c diff_output_edscript.c
 
 WARNS=
 CFLAGS+= -I${SRCTOP}/contrib/libdiff/compat/include

lib/libfido2/Makefile

@@ -43,7 +43,6 @@ SRCS+=	u2f.c
 SRCS+=	util.c
 
 SRCS+=	openbsd-compat/freezero.c
-SRCS+=	openbsd-compat/recallocarray.c
 
 CFLAGS+= -I ${DIST}/src -I${SRCTOP}/contrib/libcbor/src -I${.CURDIR}/../libcbor
 CFLAGS+= -D_FIDO_INTERNAL

tests/oclo/Makefile

@@ -5,7 +5,6 @@ TESTSDIR=	${TESTSBASE}/cddl/oclo
 PLAIN_TESTS_C=	oclo oclo_errors ocloexec_verify
 
 SRCS.oclo=	oclo.c
-LIBADD.oclo+=	openbsd
 LIBADD.ocloexec_verify+= util
 
 .include <bsd.test.mk>

usr.bin/mandoc/Makefile

@@ -60,8 +60,7 @@ LIB_SRCS=	${LIBMAN_SRCS} \
 		mandoc_xr.c \
 		msec.c \
 		preconv.c \
-		read.c \
-		compat_recallocarray.c \
+		read.c
 
 HTML_SRCS=	eqn_html.c \
 		html.c \