target/i386: Remove user stub for cpu_vmexit

This function is only called from tcg/sysemu/.
There is no need for a stub in tcg/user/.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210514151342.384376-39-richard.henderson@linaro.org>

target/i386/tcg/helper-tcg.h

@@ -77,10 +77,12 @@ extern const uint8_t parity_table[256];
 /* misc_helper.c */
 void cpu_load_eflags(CPUX86State *env, int eflags, int update_mask);
 
-/* svm_helper.c */
+/* sysemu/svm_helper.c */
+#ifndef CONFIG_USER_ONLY
 void QEMU_NORETURN cpu_vmexit(CPUX86State *nenv, uint32_t exit_code,
                               uint64_t exit_info_1, uintptr_t retaddr);
 void do_vmexit(CPUX86State *env);
+#endif
 
 /* seg_helper.c */
 void do_interrupt_x86_hardirq(CPUX86State *env, int intno, int is_hw);

target/i386/tcg/user/svm_stubs.c

@@ -22,12 +22,6 @@
 #include "exec/helper-proto.h"
 #include "tcg/helper-tcg.h"
 
-void cpu_vmexit(CPUX86State *nenv, uint32_t exit_code, uint64_t exit_info_1,
-                uintptr_t retaddr)
-{
-    assert(0);
-}
-
 void cpu_svm_check_intercept_param(CPUX86State *env, uint32_t type,
                                    uint64_t param, uintptr_t retaddr)
 {