[workflow] Remove i586 arch from gbs build

- Tizen does not provide i586 anymore. Remove the build profile.

Signed-off-by: Yongjoo Ahn <[email protected]>

Author: anyj0527

.github/workflows/tizen_gbs.yml

@@ -13,8 +13,6 @@ jobs:
         include:
           - arch: "x86_64"
             option: "--define \"unit_test 1\""
-          - arch: "i586"
-            option: "--define \"unit_test 0\""
           - arch: "armv7l"
             option: "--define \"unit_test 0\""
           - arch: "aarch64"