patch 9.0.0270: some values of 'path' and 'tags' invalid in the tiny version

Problem:    Some values of 'path' and 'tags' do not work in the tiny version.
Solution:   Graduate the +path_extra feature.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 6502b58..b3084f3 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -5954,13 +5954,7 @@
 		0
 #endif
 		},
-	{"path_extra",
-#ifdef FEAT_PATH_EXTRA
-		1
-#else
-		0
-#endif
-		},
+	{"path_extra", 1},
 	{"perl",
 #if defined(FEAT_PERL) && !defined(DYNAMIC_PERL)
 		1