ci: only run lava-test and lava-report job for scheduled pipeline

Set lava-test and lava-report job as scheduled pipeline only for the
below reasons.

* lava-test requires token set using GitLab variable for job submission
* lava-report depends on all test jobs

Signed-off-by: Chase Qi <chase.qi@linaro.org>

.gitlab-ci.yml

@@ -106,17 +106,6 @@ bundle-raspberrypi4-64:
     - if: '$CI_LAVA_TOKEN == null'
       when: never
     - if: '$CI_PIPELINE_SOURCE == "schedule"'
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event" && $CI_MERGE_REQUEST_TITLE =~ /^(wip|draft):.*/i'
-      when: manual
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes:
-        - assets/**/*
-        - flavours/**/*
-        - manifests/*.xml
-        - meta-*/**/*
-        - .oniro-ci/*
-        - .gitlab-ci.yml
-    - if: '$CI_COMMIT_TAG'
 
 # Mimic the updated rules for lava-report from the bitbake-workspace.
 .lava-report:
@@ -125,18 +114,6 @@ bundle-raspberrypi4-64:
       when: never
     - if: '$CI_PIPELINE_SOURCE == "schedule"'
       when: manual
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event" && $CI_MERGE_REQUEST_TITLE =~ /^(wip|draft):.*/i'
-      when: manual
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      when: manual
-      changes:
-        - assets/**/*
-        - flavours/**/*
-        - manifests/*.xml
-        - meta-*/**/*
-        - .oniro-ci/*
-        - .gitlab-ci.yml
-    - if: '$CI_COMMIT_TAG'
 
 ##
 ## Submit jobs to LAVA