t4104: drop hand-rolled error reporting

This use of "||" fools --chain-lint into thinking the
&&-chain is broken (and indeed, it is somewhat broken; a
failure of update-index in these tests would show the patch
file, even if we never got to the part of the test where we
fed the patch to git-apply).

The extra blocks were there to include more debugging
output, but it hardly seems worth it; the user should know
which command failed (because git-apply will produce error
messages) and can look in the trash directory themselves.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4104-apply-boundary.sh

@@ -95,10 +95,7 @@ do
 		test_expect_success "apply $kind-patch $with context" '
 			cat original >victim &&
 			git update-index victim &&
-			git apply --index '"$u$kind-patch.$with"' || {
-				cat '"$kind-patch.$with"'
-				(exit 1)
-			} &&
+			git apply --index '"$u$kind-patch.$with"' &&
 			test_cmp '"$kind"'-expect victim
 		'
 	done
@@ -113,10 +110,7 @@ do
 	test_expect_success "apply non-git $kind-patch without context" '
 		cat original >victim &&
 		git update-index victim &&
-		git apply --unidiff-zero --index '"$kind-ng.without"' || {
-			cat '"$kind-ng.without"'
-			(exit 1)
-		} &&
+		git apply --unidiff-zero --index '"$kind-ng.without"' &&
 		test_cmp '"$kind"'-expect victim
 	'
 done