Revert "go: Define a bytePool for TRichTransport" #1621

Job	Run time
compiler (ubuntu-20.04)	2m 49s
compiler (ubuntu-22.04)	2m 11s
lib-go (1.21)	1m 41s
lib-go (1.22)	1m 31s
lib-python (3.x)	1m 23s
lib-java-kotlin	4m 40s
lib-php (7.1)	1m 1s
lib-php (7.2)	1m 23s
lib-rust	3m 20s
lib-swift	1m 7s
lib-php (7.3)	1m 20s
lib-php (7.4)	58s
lib-php (8)	1m 32s
lib-php (8.1)	1m 8s
lib-php (8.2)	1m 17s
lib-php (8.3)	1m 6s
cross-test (java, java,kotlin)	1m 38s
cross-test (java, go,rs)	1m 19s
cross-test (java, swift)	50s
cross-test (kotlin, java,kotlin)	27s
cross-test (kotlin, go,rs)	30s
cross-test (kotlin, swift)	20s
cross-test (go, java,kotlin)	49s
cross-test (go, go,rs)	1m 19s
cross-test (go, swift)	28s
cross-test (rs, java,kotlin)	1m 2s
cross-test (rs, go,rs)	41s
cross-test (rs, swift)	48s
cross-test (swift, java,kotlin)	52s
cross-test (swift, go,rs)	1m 29s
cross-test (swift, swift)	27s
	41m 26s

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