Toss out now-unrequired call counting bits.

src/6model/reprs/MVMStaticFrame.h

@@ -31,14 +31,6 @@ struct MVMStaticFrameBody {
      * the VM instance wide field for this. */
     MVMuint32 instrumentation_level;
 
-    /* Rough call count. May be hit up by multiple threads, and lose the odd
-     * count, but that's fine; it's just a rough indicator, used to make
-     * decisions about optimization. */
-    MVMuint32 invocations;
-
-    /* Number of times we should invoke before spesh applies. */
-    MVMuint32 spesh_threshold;
-
     /* Recorded count for data recording for the specializer. Incremented
      * until the recording threshold is reached, and may be cleared by the
      * specialization worker later if it wants more data recorded. Allowed

src/core/frame.c

@@ -58,9 +58,6 @@ static void prepare_and_verify_static_frame(MVMThreadContext *tc, MVMStaticFrame
                     break;
                 }
         }
-
-        /* Set its spesh threshold. */
-        static_frame_body->spesh_threshold = MVM_spesh_threshold(tc, static_frame);
     }
 
     /* Unlock, now we're finished. */

src/spesh/osr.c

@@ -140,10 +140,4 @@ void MVM_spesh_osr_finalize(MVMThreadContext *tc) {
             MVM_profiler_log_osr(tc, 0);
     }
     *(tc->interp_reg_base) = tc->cur_frame->work;
-
-    /* Tweak frame invocation count so future invocations will use the code
-     * produced by OSR. */
-    tc->cur_frame->static_info->body.invocations +=
-        tc->cur_frame->static_info->body.spesh_threshold;
 }
-