benchmark: comment out FRAME pallets which can't be benchmarked

This pallets can't be benchmarked due to the change in signature for the
generated function. Which means it doesn't coincide with the provided weight
trait.

scripts/generate-weights.sh

@@ -28,10 +28,15 @@ benchmark() {
 }
 
 # FRAME benchmarks
-benchmark frame_system
+# Some FRAME pallets are commented out since the parameter's in some of the extrinsic's
+# benchmarking are being discarded and we can't adjust the trait since it's part of
+# Substrate. This problem has been fixed in this PR: https://github.com/paritytech/substrate/pull/7233
+# So uncomment this when we move to a version that contains that PR.
+# See issue: #1979
+# benchmark frame_system
 benchmark pallet_utility
 benchmark pallet_session
-benchmark pallet_timestamp
+# benchmark pallet_timestamp
 
 # This benchmark takes too long with 50 steps and 20 repeats in a normal laptop.
 # Will have it commented out until we test it in the reference machine. If there