Remove bors.toml 🫡 (#5001)

bors.toml

@@ -1,24 +0,0 @@
-status = [
-    "release-tests-ubuntu",
-    "release-tests-windows",
-    "debug-tests-ubuntu",
-    "state-transition-vectors-ubuntu",
-    "ef-tests-ubuntu",
-    "dockerfile-ubuntu",
-    "eth1-simulator-ubuntu",
-    "merge-transition-ubuntu",
-    "no-eth1-simulator-ubuntu",
-    "check-code",
-    "cargo-udeps",
-    "beacon-chain-tests",
-    "op-pool-tests",
-    "doppelganger-protection-test",
-    "execution-engine-integration-ubuntu",
-    "check-msrv",
-    "slasher-tests",
-    "syncing-simulator-ubuntu",
-    "compile-with-beta-compiler",
-]
-use_squash_merge = true
-timeout_sec = 10800
-pr_status = ["license/cla", "target-branch-check"]