Revert "tests: when run in Bash, annotate test failures with file name/line number"

This reverts commit 662f9cf,
to fix the TAP output broken for bash.

Author: gitster

t/test-lib.sh

@@ -675,18 +675,6 @@ die () {
 	fi
 }
 
-file_lineno () {
-	test -z "$GIT_TEST_FRAMEWORK_SELFTEST" && test -n "$BASH" || return 0
-	local i
-	for i in ${!BASH_SOURCE[*]}
-	do
-		case $i,"${BASH_SOURCE[$i]##*/}" in
-		0,t[0-9]*.sh) echo "t/${BASH_SOURCE[$i]}:$LINENO: ${1+$1: }"; return;;
-		*,t[0-9]*.sh) echo "t/${BASH_SOURCE[$i]}:${BASH_LINENO[$(($i-1))]}: ${1+$1: }"; return;;
-		esac
-	done
-}
-
 GIT_EXIT_OK=
 trap 'die' EXIT
 # Disable '-x' tracing, because with some shells, notably dash, it
@@ -732,7 +720,7 @@ test_failure_ () {
 		write_junit_xml_testcase "$1" "      $junit_insert"
 	fi
 	test_failure=$(($test_failure + 1))
-	say_color error "$(file_lineno error)not ok $test_count - $1"
+	say_color error "not ok $test_count - $1"
 	shift
 	printf '%s\n' "$*" | sed -e 's/^/#	/'
 	test "$immediate" = "" || { finalize_junit_xml; GIT_EXIT_OK=t; exit 1; }