Removed 1.3.20 from check-for-build (#5198)

Signed-off-by: Brandon Shien <bshien@amazon.com>

Author: bshien

jenkins/check-for-build.jenkinsfile

@@ -25,9 +25,7 @@ pipeline {
         parameterizedCron '''
             H 1 * * * %INPUT_MANIFEST=2.19.0/opensearch-dashboards-2.19.0.yml;TARGET_JOB_NAME=distribution-build-opensearch-dashboards;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=2.19.0/opensearch-dashboards-2.19.0-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 1 * * * %INPUT_MANIFEST=2.18.1/opensearch-2.18.1.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=2.18.1/opensearch-2.18.1-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
-            H */6 * * * %INPUT_MANIFEST=1.3.20/opensearch-dashboards-1.3.20.yml;TARGET_JOB_NAME=distribution-build-opensearch-dashboards;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=1.3.20/opensearch-dashboards-1.3.20-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 1 * * * %INPUT_MANIFEST=2.19.0/opensearch-2.19.0.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=2.19.0/opensearch-2.19.0-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
-            H */6 * * * %INPUT_MANIFEST=1.3.20/opensearch-1.3.20.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=1.3.20/opensearch-1.3.20-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 4 * * * %INPUT_MANIFEST=3.0.0/opensearch-3.0.0.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip
             H 4 * * * %INPUT_MANIFEST=3.0.0/opensearch-dashboards-3.0.0.yml;TARGET_JOB_NAME=distribution-build-opensearch-dashboards;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip
         '''