CI: Remove needless continue-on-error

Sicne we moved test on Ruby head to a separated workflow, so we don't
need contoinue-on-error anymore.

Signed-off-by: Takuro Ashie <ashie@clear-code.com>

Author: ashie

.github/workflows/linux-ruby-head.yml

@@ -7,15 +7,13 @@ on:
 jobs:
   build:
     runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.experimental }}
     strategy:
       fail-fast: false
       matrix:
         ruby: [ 'head' ]
         postgres: [ '16', '15', '14', '13', '12' ]
         os:
           - ubuntu-latest
-        experimental: [true]
     services:
       postgres:
         image: postgres:${{ matrix.postgres }}

.github/workflows/linux.yml

@@ -8,15 +8,13 @@ on:
 jobs:
   build:
     runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.experimental }}
     strategy:
       fail-fast: false
       matrix:
         ruby: [ '3.3', '3.2', '3.1', '3.0', '2.7' ]
         postgres: [ '16', '15', '14', '13', '12' ]
         os:
           - ubuntu-latest
-        experimental: [false]
     services:
       postgres:
         image: postgres:${{ matrix.postgres }}