target/tricore: Remove unused fields from CPUTriCoreState

Remove dead code:
- unused fields in CPUTriCoreState
- (unexisting) tricore_def_t structure
- forward declaration of tricore_boot_info structure
  (declared in "hw/tricore/tricore.h", used once in
   hw/tricore/tricore_testboard.c).

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <20230117184217.83305-1-philmd@linaro.org>

target/tricore/cpu.h

@@ -25,10 +25,6 @@
 #include "qemu/cpu-float.h"
 #include "tricore-defs.h"
 
-struct tricore_boot_info;
-
-typedef struct tricore_def_t tricore_def_t;
-
 typedef struct CPUArchState {
     /* GPR Register */
     uint32_t gpr_a[16];
@@ -179,16 +175,9 @@ typedef struct CPUArchState {
     uint32_t M3CNT;
     /* Floating Point Registers */
     float_status fp_status;
-    /* QEMU */
-    int error_code;
-    uint32_t hflags;    /* CPU State */
 
     /* Internal CPU feature flags.  */
     uint64_t features;
-
-    const tricore_def_t *cpu_model;
-    void *irq[8];
-    struct QEMUTimer *timer; /* Internal timer */
 } CPUTriCoreState;
 
 /**