[ci] cleanup Azure Pipeline templates that are unused #2454

Job	Run time
Lint (quick)	3m 37s
Lint (slow)	13m 40s
Airgapped build	12m 24s
Run OTBN crypto tests	24m 42s
Run OTBN smoke Test	2m 37s
Verible lint	0s
Build Docker Containers	2m 57s
Verilated English Breakfast	7m 49s
CW305's Bitstream	21m 12s
Verilated Earl Grey	1h 16m 44s
Build and test software	11m 27s
Earl Grey for CW310 / Build bitstream	1h 8m 12s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 8m 44s
Earl Grey for CW340 / Build bitstream	1h 27m 57s
CW310 Test ROM Tests / FPGA test	9m 0s
CW310 ROM Tests / FPGA test	37m 13s
CW310 ROM_EXT Tests / FPGA test	8m 5s
CW310 ROM_EXT Tests / FPGA test	17m 41s
CW310 SiVal Tests / FPGA test	38m 54s
CW310 SiVal ROM_EXT Tests / FPGA test	26m 53s
CW310 Manufacturing Tests / FPGA test	30m 38s
Cache bitstreams to GCP	3m 37s
CW340 ROM Tests / FPGA test	3m 26s
CW340 Test ROM Tests / FPGA test	3m 25s
CW340 Manufacturing Tests / FPGA test	11m 14s
CW340 ROM_EXT Tests / FPGA test	3m 25s
CW340 SiVal Tests / FPGA test	6m 50s
CW340 SiVal ROM_EXT Tests / FPGA test	3m 7s
Verify FPGA jobs	22s
	10h 5m 52s

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