Fix Makefile, remove martos library linking #371

Job	Run time
clippy	11s
build	5s
mips64-rust-example-dynamic-memory	1m 18s
fmt	3s
mips64-rust-example-hello-world	1m 20s
mips64-rust-example-timer	1m 18s
mips64-static-library	1m 18s
risc-v-esp32c6-rust-example-dynamic-memory	1m 40s
risc-v-esp32c6-rust-example-hello-world	1m 34s
risc-v-esp32c6-rust-example-timer	1m 39s
risc-v-esp32c6-rust-example-wifi	6m 38s
risc-v-esp32c6-static-library	1m 49s
test	22s
xtensa-esp32-rust-example-dynamic-memory	1m 38s
xtensa-esp32-rust-example-hello-world	1m 36s
xtensa-esp32-rust-example-timer	1m 38s
xtensa-esp32-rust-example-wifi	1m 44s
xtensa-esp32-static-library	1m 44s
xtensa-esp32-c-example	46s
	28m 21s

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