[infra] Remove Dart 1 builders from the CQ (Part II)

TBR=whesse@google.com

Change-Id: Ia3529510b7c4c3b17ba07d76e2da9dd8d6e9ccff
Reviewed-on: https://dart-review.googlesource.com/76541
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>

tools/bots/test_matrix.json

@@ -223,11 +223,6 @@
         "checked": true,
         "builder-tag": "swarming"
       }},
-    "vm-legacy-(linux|mac|win)-product-x64": {
-      "options": {
-        "preview-dart-2": false,
-        "builder-tag": "swarming"
-      }},
     "vm-legacy-asan-linux-release-x64": {
       "options": {
         "preview-dart-2": false,
@@ -537,28 +532,6 @@
         }
       ]
     },
-    {
-      "builders": [
-        "vm-linux-product-x64",
-        "vm-mac-product-x64",
-        "vm-win-product-x64"
-      ],
-      "meta": {
-        "description": "This configuration is used by the vm product builders."
-      },
-      "steps": [
-        {
-          "name": "build dart",
-          "script": "tools/build.py",
-          "arguments": ["runtime"]
-        },
-        {
-          "name": "vm tests",
-          "arguments": [
-            "-nvm-legacy-${system}-product-x64"]
-        }
-      ]
-    },
     {
       "builders": [
         "vm-linux-debug-ia32",

tools/infra/config/cq.cfg

@@ -32,7 +32,7 @@ verifiers {
       builders { name: "vm-kernel-linux-release-simdbc64-try" }
       builders { name: "vm-kernel-linux-release-x64-try" }
       builders { name: "vm-kernel-mac-release-x64-try" experiment_percentage: 5 }
-      builders { name: "vm-linux-product-x64-try" }
+      builders { name: "vm-kernel-linux-product-x64-try" }
     }
     try_job_retry_config {
       try_job_retry_quota: 0