regmap: Remove duplicate `type` field from regmap `regcache_sync` trace event

I have an error saying that `regcache_sync` has 2 fields named `type`
while using libtraceevent.

Erase the `int field` type, which is not assigned. This field is
introduced by mistake and this commit removes it.

Fixes: 59360089 ("regmap: Add the regcache_sync trace event")
Signed-off-by: Philippe Duplessis-Guindon <pduplessis@efficios.com>
Link: https://lore.kernel.org/r/20201124135730.9185-1-pduplessis@efficios.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/base/regmap/trace.h

@@ -126,7 +126,6 @@ TRACE_EVENT(regcache_sync,
 		__string(       name,           regmap_name(map)	)
 		__string(	status,		status			)
 		__string(	type,		type			)
-		__field(	int,		type			)
 	),
 
 	TP_fast_assign(