Revert "ci: run riscv64-linux jobs if ci-riscv64-linux label is applied"

This reverts commit 8101104db0.

.github/workflows/ci.yaml

@@ -1,11 +1,6 @@
 name: ci
 on:
   pull_request:
-    types:
-      - labeled
-      - opened
-      - reopened
-      - synchronize
   push:
     branches:
       - master
@@ -56,7 +51,7 @@ jobs:
       - name: Build and Test
         run: sh ci/aarch64-linux-release.sh
   riscv64-linux-debug:
-    if: github.event_name == 'push' || contains(github.event.pull_request.labels.*.name, 'ci-riscv64-linux')
+    if: github.event_name == 'push'
     timeout-minutes: 420
     runs-on: [self-hosted, Linux, riscv64]
     steps:
@@ -65,7 +60,7 @@ jobs:
       - name: Build and Test
         run: sh ci/riscv64-linux-debug.sh
   riscv64-linux-release:
-    if: github.event_name == 'push' || contains(github.event.pull_request.labels.*.name, 'ci-riscv64-linux')
+    if: github.event_name == 'push'
     timeout-minutes: 420
     runs-on: [self-hosted, Linux, riscv64]
     steps: