fix(release): drop broken CGO_ENABLED=0 static build target

smacker/go-tree-sitter requires CGO: the Node type is defined only in
bindings.go behind //go:build cgo, while iter.go references it without
a build tag. With CGO_ENABLED=0 every iter.go:N: undefined: Node fails
the build.

The mcp-filepuff-static target was added in 9205b2b after the last
successful release (v0.2.3) and has never produced an artifact — every
release since has been red. Dropping it restores the working release
shape: darwin_arm64 + linux_amd64 + windows_amd64 CGO binaries, same
as v0.2.3 shipped.

.goreleaser.yaml

@@ -38,25 +38,6 @@ builds:
       - goos: windows
         goarch: arm64
 
-  - id: mcp-filepuff-static
-    main: ./cmd/mcp-filepuff
-    binary: mcp-filepuff
-    env:
-      - CGO_ENABLED=0
-    flags:
-      - -trimpath
-    ldflags:
-      - -s -w
-      - -X main.version={{.Version}}
-      - -X main.commit={{.Commit}}
-      - -X main.date={{.Date}}
-      - -extldflags=-static
-    goos:
-      - linux
-    goarch:
-      - amd64
-      - arm64
-
 archives:
   - id: default
     formats: