Couldn't resolve plutus extra or plutus ledger

agora.cabal

@@ -86,7 +86,7 @@ common deps
   build-depends:
     , aeson
     , ansi-terminal
-    , base                     >=4.14 && <5
+    , base                >=4.14 && <5
     , base-compat
     , bytestring
     , cardano-prelude
@@ -95,8 +95,6 @@ common deps
     , data-default-class
     , plutarch
     , plutus-core
-    -- , plutus-extra
-    -- , plutus-ledger
     , plutus-ledger-api
     , plutus-tx
     , pprelude

flake.lock

@@ -852,23 +852,6 @@
         "type": "github"
       }
     },
-    "plutus-extra": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1643739251,
-        "narHash": "sha256-L7WSXvGWxfuqSP4ZNdbuT2AdW89mAJsE6+3mxO+1dx8=",
-        "owner": "Liqwid-Labs",
-        "repo": "plutus-extra",
-        "rev": "bfeb0d2bb1bc18f147e58c200db2022f5c75eb60",
-        "type": "github"
-      },
-      "original": {
-        "owner": "Liqwid-Labs",
-        "repo": "plutus-extra",
-        "rev": "bfeb0d2bb1bc18f147e58c200db2022f5c75eb60",
-        "type": "github"
-      }
-    },
     "pre-commit-hooks-nix": {
       "flake": false,
       "locked": {
@@ -929,8 +912,7 @@
           "nixpkgs"
         ],
         "nixpkgs-2111": "nixpkgs-2111",
-        "plutarch": "plutarch",
+        "plutarch": "plutarch"
-        "plutus-extra": "plutus-extra"
       }
     },
     "sized-functors": {

flake.nix

@@ -4,10 +4,6 @@
   inputs.nixpkgs.follows = "plutarch/nixpkgs";
   inputs.haskell-nix.follows = "plutarch/haskell-nix";
 
-  inputs.plutus-extra.url =
-    "github:Liqwid-Labs/plutus-extra?rev=bfeb0d2bb1bc18f147e58c200db2022f5c75eb60";
-  inputs.plutus-extra.flake = false; # Could we set this to true?
-
   # temporary fix for nix versions that have the transitive follows bug 
   # see https://github.com/NixOS/nix/issues/6013
   inputs.nixpkgs-2111 = { url = "github:NixOS/nixpkgs/nixpkgs-21.11-darwin"; };
@@ -47,9 +43,7 @@
           extraSources = plutarch.extraSources ++ [{
             src = inputs.plutarch;
             subdirs = [ "." ];
-          }
+          }];
-
-            ];
           modules = [ (plutarch.haskellModule system) ];
           shell = {
             withHoogle = true;