misc: Remove unused params() definitions

Lots of times the params() helper has been defined but not used

Change-Id: Id71829aca71341d46964d8f071099342b946b62f
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41613
Tested-by: kokoro <noreply+kokoro@google.com>

src/gpu-compute/lds_state.hh

@@ -259,7 +259,7 @@ class LdsState: public ClockedObject
                        unsigned *numBankAccesses);
 
   public:
-    PARAMS(LdsState);
+    using Params = LdsStateParams;
 
     LdsState(const Params &params);