fix: remove redundnat .json files

fix: remove redundnat .json files and add comment on where these ABIs can be found

Author: rjan90

Makefile

@@ -355,9 +355,11 @@ devnet/down:
 
 
 
-%.abi: %.json
-	jq -r .abi $*.json > $@
-
+# Download ABIs directly from PDP release:
+# curl -L https://github.com/FilOzone/pdp/releases/download/vX.Y.Z/PDPVerifier.abi.json \
+#      -o pdp/contract/PDPVerifier.abi
+# curl -L https://github.com/FilOzone/pdp/releases/download/vX.Y.Z/IPDPProvingSchedule.abi.json \
+#      -o pdp/contract/IPDPProvingSchedule.abi
 
 %.go: %.abi
 	abigen --abi $^ --type $(notdir $*) --pkg $(notdir $(patsubst %/,%,$(dir $@))) --out $@