compiler.h, seqlock.h: Remove unnecessary kcsan.h includes

No we longer have to include kcsan.h, since the required KCSAN interface
for both compiler.h and seqlock.h are now provided by kcsan-checks.h.
Acked-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

include/linux/compiler.h

@@ -313,8 +313,6 @@ unsigned long read_word_at_a_time(const void *addr)
 	__u.__val;					\
 })
 
-#include <linux/kcsan.h>
-
 /**
  * data_race - mark an expression as containing intentional data races
  *

include/linux/seqlock.h

@@ -37,7 +37,7 @@
 #include <linux/preempt.h>
 #include <linux/lockdep.h>
 #include <linux/compiler.h>
-#include <linux/kcsan.h>
+#include <linux/kcsan-checks.h>
 #include <asm/processor.h>
 
 /*