patch 9.0.0265: no good reason why the "gf" command isn't in the tiny version

Problem:    No good reason why the "gf" command is not in the tiny version.
Solution:   Graduate the file_in_path feature.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index c199bdb..3c26453 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -5646,13 +5646,7 @@
 		0
 #endif
 		},
-	{"file_in_path",
-#ifdef FEAT_SEARCHPATH
-		1
-#else
-		0
-#endif
-		},
+	{"file_in_path", 1},
 	{"filterpipe",
 #if defined(FEAT_FILTERPIPE) && !defined(VIMDLL)
 		1