Revert "Try run-requiring platform explictly"

This reverts commit 3c7b1868a4 because
it did not help. Currently, MBS always removes the dependency on
platform.

<https://pagure.io/fm-orchestrator/issue/1714>.

perl-bootstrap.yaml

@@ -140,8 +140,6 @@ data:
     configurations:
         - context: '601d93de'
           platform: f33
-          requires:
-            platform: [f33]
           buildopts:
               rpms:
                   macros: |
@@ -206,8 +204,6 @@ data:
                       %_without_perl_version_enables_optional_test 1
         - context: '058368ca'
           platform: f34
-          requires:
-            platform: [f34]
           buildopts:
               rpms:
                   macros: |
@@ -272,8 +268,6 @@ data:
                       %_without_perl_version_enables_optional_test 1
         - context: 'f27b74a8'
           platform: f35
-          requires:
-            platform: [f35]
           buildopts:
               rpms:
                   macros: |
@@ -337,8 +331,6 @@ data:
                       %_without_perl_URI_enables_Business_ISBN 1
                       %_without_perl_version_enables_optional_test 1
         - context: '8b234a03'
-          requires:
-            platform: [eln]
           platform: eln
           buildopts:
               rpms: