target/helpers: Remove unnecessary 'qemu/main-loop.h' header

"qemu/main-loop.h" declares functions related to QEMU's
main loop mutex, which these files don't access. Remove
the unused "qemu/main-loop.h" header.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230828221314.18435-8-philmd@linaro.org>

target/riscv/csr.c

@@ -23,7 +23,6 @@
 #include "cpu.h"
 #include "pmu.h"
 #include "time_helper.h"
-#include "qemu/main-loop.h"
 #include "exec/exec-all.h"
 #include "exec/tb-flush.h"
 #include "sysemu/cpu-timers.h"

target/riscv/m128_helper.c

@@ -19,7 +19,6 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
-#include "qemu/main-loop.h"
 #include "exec/exec-all.h"
 #include "exec/helper-proto.h"
 

target/riscv/op_helper.c

@@ -21,7 +21,6 @@
 #include "qemu/osdep.h"
 #include "cpu.h"
 #include "internals.h"
-#include "qemu/main-loop.h"
 #include "exec/exec-all.h"
 #include "exec/cpu_ldst.h"
 #include "exec/helper-proto.h"

target/riscv/pmu.h

@@ -17,7 +17,6 @@
  */
 
 #include "cpu.h"
-#include "qemu/main-loop.h"
 
 bool riscv_pmu_ctr_monitor_instructions(CPURISCVState *env,
                                         uint32_t target_ctr);