accel/tcg: Remove dead mmap_unlock() call in invalidate_phys_page_range

Since commit a97d5d2c8be ("accel/tcg: Use interval tree for TBs in
user-only mode") this code is guarded with #ifdef'ry and only build
for system emulation where mmap_unlock() is meaningless. Remove the
call.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250924164824.51971-1-philmd@linaro.org>
diff --git a/accel/tcg/tb-maint.c b/accel/tcg/tb-maint.c
index c45fd42..5a8d078 100644
--- a/accel/tcg/tb-maint.c
+++ b/accel/tcg/tb-maint.c
@@ -1168,7 +1168,6 @@
         page_collection_unlock(pages);
         /* Force execution of one insn next time.  */
         cpu->cflags_next_tb = 1 | CF_NOIRQ | curr_cflags(cpu);
-        mmap_unlock();
         cpu_loop_exit_noexc(cpu);
     }
 }