Remove deprecated/broken tools: guru, gorename, keyify

These tools no longer build successfully:
- guru and gorename were removed from golang.org/x/tools
- keyify has build issues with current honnef.co/go/tools

tools.json

@@ -48,18 +48,6 @@
       "version": "v1.1.2",
       "date": "2020-03-03"
     },
-    {
-      "name": "guru",
-      "package": "golang.org/x/tools/cmd/guru",
-      "version": "v0.40.0",
-      "date": "2025-12-08"
-    },
-    {
-      "name": "gorename",
-      "package": "golang.org/x/tools/cmd/gorename",
-      "version": "v0.40.0",
-      "date": "2025-12-08"
-    },
     {
       "name": "gotests",
       "package": "github.com/cweill/gotests/gotests",
@@ -120,12 +108,6 @@
       "version": "v0.0.0-20240122035601-9c3e2fbe4bd1",
       "date": "2024-01-22"
     },
-    {
-      "name": "keyify",
-      "package": "honnef.co/go/tools/cmd/keyify",
-      "version": "v0.6.1",
-      "date": "2025-03-05"
-    },
     {
       "name": "asmfmt",
       "package": "github.com/klauspost/asmfmt/cmd/asmfmt",