chore: removing the forked repo in repo.sh #1127

Job	Run time
run_ci (ubuntu-latest, 3.11, xqueue)	2m 19s
run_ci (ubuntu-latest, 3.11, edx_notes_api+lms)	18m 19s
run_ci (ubuntu-latest, 3.11, designer+lms)	19m 25s
run_ci (ubuntu-latest, 3.11, analyticsapi+insights+lms)	22m 51s
run_ci (ubuntu-latest, 3.11, license-manager+lms)	19m 33s
run_ci (ubuntu-latest, 3.11, ecommerce+lms)	24m 21s
run_ci (ubuntu-latest, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	25m 41s
run_ci (ubuntu-latest, 3.11, registrar+lms)	19m 4s
run_ci (ubuntu-latest, 3.11, credentials+lms)	19m 40s
run_ci (ubuntu-latest, 3.11, discovery+lms+forum)	23m 32s
run_ci (ubuntu-latest, 3.11, edx-exams+lms)	19m 5s
	3h 33m 50s

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