Revert "src/Makefile: log real/user/system time for build targets"

This broke `make makeman` by unconditionally adding output to all top
level targets.  Lacking an obvious and trivial workaround, it makes
sense to back it out and rethink.

This reverts commit afa70490ee779646fa0e936801cb28795580bf01.

PR:		287274

Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D51119

1 files changed, 1 insertions, 10 deletions

diff --git a/Makefile b/Makefile
index d600eb69ed4b..4afec2a80c60 100644
--- a/Makefile
+++ b/Makefile
@@ -376,22 +376,13 @@ buildworld: upgrade_checks
 kernel-toolchain: upgrade_checks
 .endif
 
-# we need the system time(1) command, not from the shell
-time_cmd= /usr/bin/time
-
-# mktemp(1) is not portable
-mktemp_cmd= mktemp /tmp/_time-logging-XXXXXXXXX
-
 #
 # Handle the user-driven targets, using the source relative mk files.
 #
 
 tinderbox toolchains kernel-toolchains: .MAKE
 ${TGTS}: .PHONY .MAKE
-	${_+_}@cd ${.CURDIR}; _time_tmp=$$(${mktemp_cmd}); \
-	  ${time_cmd} -o $${_time_tmp} -p env ${_MAKE} ${.TARGET}; \
-	  echo ">>> Time spent on target ${.TARGET}: $$(tr '\n' ' ' < $${_time_tmp})"; \
-	  rm -f $${_time_tmp}
+	${_+_}@cd ${.CURDIR}; ${_MAKE} ${.TARGET}
 
 # The historic default "all" target creates files which may cause stale
 # or (in the cross build case) unlinkable results. Fail with an error