grep: tests: stop testing for a nonexistent version of grep

Differential Revision:	https://reviews.freebsd.org/D27732

usr.bin/grep/tests/grep_freebsd_test.sh

@@ -28,12 +28,9 @@
 
 # What grep(1) are we working with?
 # - 0 : bsdgrep
-# - 1 : gnu grep 2.51 (base)
-# - 2 : gnu grep (ports)
+# - 1 : gnu grep (ports)
 GREP_TYPE_BSD=0
-GREP_TYPE_GNU_FREEBSD=1
-GREP_TYPE_GNU=2
-GREP_TYPE_UNKNOWN=3
+GREP_TYPE_GNU=1
 
 grep_type()
 {
@@ -44,16 +41,9 @@ grep_type()
 		return $GREP_TYPE_BSD
 		;;
 	*"GNU grep"*)
-		case "$grep_version" in
-		*2.5.1-FreeBSD*)
-			return $GREP_TYPE_GNU_FREEBSD
-			;;
-		*)
 		return $GREP_TYPE_GNU
 		;;
 	esac
-		;;
-	esac
 	atf_fail "unknown grep type: $grep_version"
 }
 
@@ -87,9 +77,6 @@ gnuext_body()
 {
 	grep_type
 	_type=$?
-	if [ $_type -eq $GREP_TYPE_GNU_FREEBSD ]; then
-		atf_expect_fail "\\s and \\S are known to be buggy in base gnugrep"
-	fi
 
 	atf_check -o save:grep_alnum.out grep -o '[[:alnum:]]' /COPYRIGHT
 	atf_check -o file:grep_alnum.out grep -o '\w' /COPYRIGHT