remove dead code in makefile (#1740)

Makefile

@@ -3,48 +3,6 @@ build-cli:
 	cargo build -p anchor-cli --release
 	cp target/release/anchor cli/npm-package/anchor
 
-.PHONY: build-example-bpf-%
-build-example-bpf-%: export NAME=$(subst _,/,$($(strip @):build-example-bpf-%=%))
-build-example-bpf-%:
-	cd examples/${NAME} && cargo build-bpf
-
-.PHONY: build-example-bpf-permissioned-markets
-build-example-bpf-permissioned-markets:
-	cd examples/permissioned-markets/deps/serum-dex/dex && cargo build-bpf
-	cd examples/permissioned-markets && cargo build-bpf
-
-.PHONY: build-example-bpf-swap
-build-example-bpf-swap:
-	cd examples/swap/deps/serum-dex/dex && cargo build-bpf
-	cd examples/swap && cargo build-bpf
-
-.PHONY: build-example-bpf-all
-build-example-bpf-all: build-example-bpf-cashiers-check
-build-example-bpf-all: build-example-bpf-cfo
-build-example-bpf-all: build-example-bpf-chat
-build-example-bpf-all: build-example-bpf-composite
-build-example-bpf-all: build-example-bpf-errors
-build-example-bpf-all: build-example-bpf-escrow
-build-example-bpf-all: build-example-bpf-events
-build-example-bpf-all: build-example-bpf-ido-pool
-build-example-bpf-all: build-example-bpf-interface
-build-example-bpf-all: build-example-bpf-lockup
-build-example-bpf-all: build-example-bpf-misc
-build-example-bpf-all: build-example-bpf-multisig
-build-example-bpf-all: build-example-bpf-permissioned-markets
-build-example-bpf-all: build-example-bpf-pyth
-build-example-bpf-all: build-example-bpf-spl_token-proxy
-build-example-bpf-all: build-example-bpf-swap
-build-example-bpf-all: build-example-bpf-sysvars
-build-example-bpf-all: build-example-bpf-tutorial_basic-0
-build-example-bpf-all: build-example-bpf-tutorial_basic-1
-build-example-bpf-all: build-example-bpf-tutorial_basic-2
-build-example-bpf-all: build-example-bpf-tutorial_basic-3
-build-example-bpf-all: build-example-bpf-tutorial_basic-4
-build-example-bpf-all: build-example-bpf-tutorial_basic-5
-build-example-bpf-all: build-example-bpf-typescript
-build-example-bpf-all: build-example-bpf-zero-copy
-
 .PHONY: clean
 clean:
 	find . -type d -name .anchor -print0 | xargs -0 rm -rf