pan/decode: Remove shader replacement artefact

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6196>
diff --git a/src/panfrost/pandecode/decode.c b/src/panfrost/pandecode/decode.c
index 3722624..8a99090 100644
--- a/src/panfrost/pandecode/decode.c
+++ b/src/panfrost/pandecode/decode.c
@@ -332,9 +332,6 @@
 };
 #undef FLAG_INFO
 
-extern char *replace_fragment;
-extern char *replace_vertex;
-
 #define DEFINE_CASE(name) case MALI_## name: return "MALI_" #name
 static char *pandecode_format(enum mali_format format)
 {