mem: Remove the IIC replacement policy

The IIC replacement policy seems to be unused and has probably
gathered too much bit rot to be useful. This patch removes the IIC and
its associated cache parameters.

src/mem/cache/BaseCache.py

@@ -52,21 +52,14 @@ class BaseCache(MemObject):
     hit_latency = Param.Cycles("The hit latency for this cache")
     response_latency = Param.Cycles(
             "Additional cache latency for the return path to core on a miss");
-    hash_delay = Param.Cycles(1, "time in cycles of hash access")
     max_miss_count = Param.Counter(0,
         "number of misses to handle before calling exit")
     mshrs = Param.Int("number of MSHRs (max outstanding requests)")
-    prioritizeRequests = Param.Bool(False,
-        "always service demand misses first")
-    repl = Param.Repl(NULL, "replacement policy")
     size = Param.MemorySize("capacity in bytes")
     forward_snoops = Param.Bool(True,
         "forward snoops from mem side to cpu side")
     is_top_level = Param.Bool(False, "Is this cache at the top level (e.g. L1)")
-    subblock_size = Param.Int(0,
-        "Size of subblock in IIC used for compression")
     tgts_per_mshr = Param.Int("max number of accesses per MSHR")
-    trace_addr = Param.Addr(0, "address to trace")
     two_queue = Param.Bool(False,
         "whether the lifo should have two queue replacement")
     write_buffers = Param.Int(8, "number of write buffers")