diff --git a/tools/bots/test_matrix.json b/tools/bots/test_matrix.json
index 027e6dc0c78..8f074fa844d 100644
--- a/tools/bots/test_matrix.json
+++ b/tools/bots/test_matrix.json
@@ -362,12 +362,6 @@
     "flutter-frontend": {
       "__comment__": "This configuration is only used for a custom test runner. If it conflicts with a new configuration you are adding, you can make this configuration more specific by adding options."
     },
-    "vm-ffi-unit-test-temp": {
-      "__comment__": "Preventing conflict until old builder removed",
-      "options": {
-        "builder-tag": "ffi-temp"
-      }
-    },
     "vm-ffi-unit-test": {
       "__comment__": "This configuration is only used for a custom test runner. If it conflicts with a new configuration you are adding, you can make this configuration more specific by adding options.",
       "options": {
@@ -729,31 +723,12 @@
         "nnbd": "strong"
       }
     },
-    "dartk-linux-(debug|product|release)-(arm|arm64|arm64c|riscv32|riscv64)-qemu": {
-      "options": {
-        "use-qemu": true,
-        "vm-options": [
-          "--no-sound-null-safety"
-        ]
-      }
-    },
     "vm-aot-linux-(debug|product|release)-(arm|arm64|arm64c|riscv32|riscv64)-qemu": {
       "options": {
         "use-qemu": true,
         "nnbd": "strong"
       }
     },
-    "dartkp-linux-(debug|product|release)-(arm|arm64|arm64c|riscv32|riscv64)-qemu": {
-      "options": {
-        "use-qemu": true,
-        "vm-options": [
-          "--no-sound-null-safety"
-        ],
-        "gen-kernel-options": [
-          "--no-sound-null-safety"
-        ]
-      }
-    },
     "vm-appjit-(linux|mac|win)-(debug|product|release)-(x64|arm64)": {
       "options": {
         "compiler": "app_jitk",
@@ -1051,107 +1026,6 @@
         }
       ]
     },
-    {
-      "builders": [
-        "vm-precomp-ffi-qemu-linux-release-arm"
-      ],
-      "meta": {
-        "description": "This configuration is used for running vm unit tests and FFI tests on qemu and FFI unit tests."
-      },
-      "steps": [
-        {
-          "name": "build run_ffi_unit_tests",
-          "script": "tools/build.py",
-          "arguments": [
-            "--arch=x64",
-            "--mode=debug",
-            "run_ffi_unit_tests"
-          ]
-        },
-        {
-          "name": "vm ffi unit tests",
-          "arguments": [
-            "-nvm-ffi-unit-test-temp",
-            "ffi_unit"
-          ]
-        },
-        {
-          "name": "build dart",
-          "script": "tools/build.py",
-          "arguments": [
-            "--use-qemu",
-            "dart_precompiled_runtime",
-            "runtime"
-          ]
-        },
-        {
-          "name": "build dart",
-          "script": "tools/build.py",
-          "arguments": [
-            "--arch=simarm_x64",
-            "gen_snapshot"
-          ]
-        },
-        {
-          "name": "vm unit tests",
-          "arguments": [
-            "-ndartk-linux-${mode}-arm-qemu",
-            "vm/cc"
-          ]
-        },
-        {
-          "name": "vm ffi tests",
-          "arguments": [
-            "-ndartkp-linux-${mode}-arm-qemu",
-            "ffi"
-          ]
-        }
-      ]
-    },
-    {
-      "builders": [
-        "vm-precomp-ffi-qemu-linux-release-riscv64"
-      ],
-      "meta": {
-        "description": "This configuration is used for running vm unit tests and FFI tests on qemu and FFI unit tests."
-      },
-      "steps": [
-        {
-          "name": "build dart",
-          "script": "tools/build.py",
-          "arguments": [
-            "--no-clang",
-            "--no-goma",
-            "--use-qemu",
-            "--use-mallinfo2",
-            "dart_precompiled_runtime",
-            "runtime"
-          ]
-        },
-        {
-          "name": "build dart",
-          "script": "tools/build.py",
-          "arguments": [
-            "--arch=simriscv64",
-            "gen_snapshot"
-          ]
-        },
-        {
-          "name": "vm unit tests",
-          "arguments": [
-            "-ndartk-linux-${mode}-riscv64-qemu",
-            "vm/cc"
-          ]
-        },
-        {
-          "name": "vm ffi tests",
-          "arguments": [
-            "-ndartkp-linux-${mode}-riscv64-qemu",
-            "ffi"
-          ]
-        }
-      ]
-    },
     {
       "builders": [
         "vm-ffi-qemu-linux-release-arm"