gitmodules: Drop dejagnu tracking branch #307

Job	Run time
build-multilib	0s
test-sim (ubuntu-20.04, newlib, rv64gc-lp64d, spike)	2h 27m 24s
build (ubuntu-20.04, newlib, rv32gc-ilp32d, gcc)	2h 54m 1s
build (ubuntu-20.04, newlib, rv32gc-ilp32d, llvm)	3h 22m 23s
build (ubuntu-20.04, newlib, rv64gc-lp64d, gcc)	3h 30m 28s
build (ubuntu-20.04, newlib, rv64gc-lp64d, llvm)	3h 34m 59s
build (ubuntu-20.04, linux, rv32gc-ilp32d, gcc)	4h 59m 2s
build (ubuntu-20.04, linux, rv32gc-ilp32d, llvm)	3h 24m 51s
build (ubuntu-20.04, linux, rv64gc-lp64d, gcc)	5h 17m 20s
build (ubuntu-20.04, linux, rv64gc-lp64d, llvm)	3h 42m 29s
build (ubuntu-20.04, musl, rv64gc-lp64d, gcc)	51m 30s
build (ubuntu-22.04, newlib, rv32gc-ilp32d, gcc)	1h 9m 0s
build (ubuntu-22.04, newlib, rv32gc-ilp32d, llvm)	3h 58m 31s
build (ubuntu-22.04, newlib, rv64gc-lp64d, gcc)	1h 11m 23s
build (ubuntu-22.04, newlib, rv64gc-lp64d, llvm)	2h 58m 39s
build (ubuntu-22.04, linux, rv32gc-ilp32d, gcc)	1h 20m 54s
build (ubuntu-22.04, linux, rv32gc-ilp32d, llvm)	3h 21m 19s
build (ubuntu-22.04, linux, rv64gc-lp64d, gcc)	1h 8m 54s
build (ubuntu-22.04, linux, rv64gc-lp64d, llvm)	3h 28m 22s
build (ubuntu-22.04, musl, rv64gc-lp64d, gcc)	1h 1m 2s
	2d 5h 42m 31s

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