build: remove unreferenced tsconfig-build.json files (#30858)

These are no longer needed since Bazel generates a tsconfig for each compilation

PR Close #30858

packages/benchpress/tsconfig-build.json

@@ -1,21 +0,0 @@
-{
-  "extends": "../tsconfig-build.json",
-
-  "compilerOptions": {
-    "module": "commonjs",
-    "baseUrl": ".",
-    "rootDir": ".",
-    "sourceRoot": ".",
-    "paths": {
-      "@angular/core": ["../../dist/packages/core"]
-    },
-    "outDir": "../../dist/packages/benchpress"
-  },
-
-  "files": [
-    "index.ts",
-    "../../node_modules/@types/node/index.d.ts",
-    "../../node_modules/@types/jasmine/index.d.ts",
-    "../../node_modules/zone.js/dist/zone.js.d.ts"
-  ]
-}