chore: clean up configuration and Makefile targets

- Remove `.editorconfig` file
- Remove `.revive.toml` file
- Change `gofumpt` flag from `-l -s` to `-l -w` in `Makefile`
- Remove `install-embedmd`, `embedmd-check`, and `embedmd` targets from `Makefile`
- Remove `lint`, `misspell-check`, and `misspell` targets from `Makefile`

Signed-off-by: appleboy <[email protected]>

Makefile

@@ -1,21 +1,8 @@
-.PHONY: test
-
 GO ?= go
-GOFMT ?= gofumpt -l -s
+GOFMT ?= gofumpt -l -w
 PACKAGES ?= $(shell $(GO) list ./...)
 GOFILES := $(shell find . -name "*.go" -type f)
 
-install-embedmd:
-	@hash embedmd > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		$(GO) get -u github.com/campoy/embedmd; \
-	fi
-
-embedmd-check: install-embedmd
-	embedmd -d *.md
-
-embedmd: install-embedmd
-	embedmd -w *.md
-
 .PHONY: fmt
 fmt:
 	$(GOFMT) -w $(GOFILES)
@@ -35,26 +22,6 @@ test: fmt-check
 vet:
 	$(GO) vet ./...
 
-lint:
-	@hash revive > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		$(GO) get -u github.com/mgechev/revive; \
-	fi
-	revive -config .revive.toml ./... || exit 1
-
-.PHONY: misspell-check
-misspell-check:
-	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
-	fi
-	misspell -error ./...
-
-.PHONY: misspell
-misspell:
-	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
-	fi
-	misspell -w $(GOFILES)
-
 clean:
 	$(GO) clean -modcache -cache -i
 	find . -name "coverage.txt" -delete