Revert "trying to fix bindgen on alpine"

This reverts commit 6eb1b149e9.

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ng-rocksdb"
 description = "Rust wrapper for Facebook's RocksDB embeddable database, fork for Nextgraph.org"
-version = "0.21.0-ngpreview.5"
+version = "0.21.0-ngpreview.4"
 edition = "2018"
 rust-version = "1.60"
 authors = ["Tyler Neely <t@jujit.su>", "David Greenberg <dsg123456789@gmail.com>"]
@@ -58,6 +58,6 @@ features = ["vendored"]
 
 [build-dependencies]
 cc = { version = "1.0", features = ["parallel"] }
-bindgen = { version = "0.65", default-features = false, features = ["static"] }
+bindgen = { version = "0.65", default-features = false, features = ["runtime"] }
 glob = "0.3"
 pkg-config = { version = "0.3" }