Manually remove $(BUILT_SOURCES) since no-dist-built-sources doesnt work #1568

Job	Run time
compiler (ubuntu-20.04)	2m 36s
compiler (ubuntu-22.04)	2m 43s
lib-java-kotlin	4m 5s
lib-php (7.1)	1m 2s
lib-php (7.2)	58s
lib-php (7.3)	1m 41s
lib-php (7.4)	47s
lib-python (3.x)	1m 51s
lib-php (8)	1m 36s
lib-rust	2m 36s
lib-php (8.1)	48s
lib-go (1.21)	1m 33s
lib-php (8.2)	1m 30s
lib-swift	2m 28s
lib-go (1.22)	1m 37s
lib-php (8.3)	48s
cross-test (java, java,kotlin)	1m 48s
cross-test (java, go,rs)	1m 55s
cross-test (java, swift)	29s
cross-test (kotlin, java,kotlin)	56s
cross-test (kotlin, go,rs)	55s
cross-test (kotlin, swift)	26s
cross-test (go, java,kotlin)	47s
cross-test (go, go,rs)	1m 43s
cross-test (go, swift)	52s
cross-test (rs, java,kotlin)	40s
cross-test (rs, go,rs)	42s
cross-test (rs, swift)	54s
cross-test (swift, java,kotlin)	30s
cross-test (swift, go,rs)	1m 18s
cross-test (swift, swift)	48s
	43m 22s

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