flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/04c1b180862888302ddfb2e3ad9eaa63afc60cf8' (2022-05-17)
  → 'github:numtide/flake-utils/cfacdce06f30d2b68473a46042957675eebb3401' (2023-04-11)
• Added input 'flake-utils/systems':
    'github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e' (2023-04-09)
• Updated input 'nixpkgs':
    'path:/nix/store/yyddvwq452qsvpgb104mllpq0hkkmsqx-source?lastModified=0&narHash=sha256-GNay7yDPtLcRcKCNHldug85AhAvBpTtPEJWSSDYBw8U=' (1970-01-01)
  → 'path:/nix/store/bbi5840s1wrrg0lf7b63vddfppjbqpyg-source?lastModified=1681041438&narHash=sha256-NmRGMklxBZ8Ol47CKMQxAU1F+v8ySpsHAAiC7ZL4vxY=&rev=48dcbaf7fa799509cbec85d55b8d62dcf1477d57' (2023-04-09)

flake.lock

@@ -1,12 +1,15 @@
 {
   "nodes": {
     "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
       "locked": {
-        "lastModified": 1652776076,
-        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
         "type": "github"
       },
       "original": {
@@ -17,9 +20,10 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 0,
-        "narHash": "sha256-GNay7yDPtLcRcKCNHldug85AhAvBpTtPEJWSSDYBw8U=",
-        "path": "/nix/store/yyddvwq452qsvpgb104mllpq0hkkmsqx-source",
+        "lastModified": 1681041438,
+        "narHash": "sha256-NmRGMklxBZ8Ol47CKMQxAU1F+v8ySpsHAAiC7ZL4vxY=",
+        "path": "/nix/store/bbi5840s1wrrg0lf7b63vddfppjbqpyg-source",
+        "rev": "48dcbaf7fa799509cbec85d55b8d62dcf1477d57",
         "type": "path"
       },
       "original": {
@@ -32,6 +36,21 @@
         "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -20,7 +20,6 @@
             gopls
             gotools
             go-tools
-            go-langserver
             gopls
           ];
         };