Remove remaining performance harness artifacts

- Remove profile-runs-replication.ts script
- Remove profiling-related .gitignore entries
- Remove clinic/commander devDependencies

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: ericallam

.gitignore

@@ -50,11 +50,6 @@ apps/**/public/build
 /playwright-report/
 /playwright/.cache/
 
-# profiling outputs
-profiling-results/
-*.clinic-*
-*-v8.log
-
 .cosine
 .trigger
 .tshy*

apps/webapp/package.json

@@ -223,8 +223,6 @@
     "zod-validation-error": "^1.5.0"
   },
   "devDependencies": {
-    "@clinic/doctor": "^11.0.0",
-    "@clinic/flame": "^13.0.0",
     "@internal/clickhouse": "workspace:*",
     "@internal/replication": "workspace:*",
     "@internal/testcontainers": "workspace:*",
@@ -267,8 +265,6 @@
     "@typescript-eslint/parser": "^5.59.6",
     "autoevals": "^0.0.130",
     "autoprefixer": "^10.4.13",
-    "clinic": "^13.0.0",
-    "commander": "^11.0.0",
     "css-loader": "^6.10.0",
     "datepicker": "link:@types/@react-aria/datepicker",
     "engine.io": "^6.5.4",