x86/msr: Remove rdmsrl()

rdmsrl() has no users left. Delete it.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://patch.msgid.link/20260608082809.3492719-3-jgross@suse.com

arch/x86/include/asm/msr.h

@@ -304,7 +304,6 @@ static inline int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8])
 #endif  /* CONFIG_SMP */
 
 /* Compatibility wrappers: */
-#define rdmsrl(msr, val) rdmsrq(msr, val)
 #define wrmsrl(msr, val) wrmsrq(msr, val)
 
 #endif /* __ASSEMBLER__ */