Remove unused dependency features, prefer libz-backed implementations

Cargo.lock

@@ -89,6 +89,7 @@ dependencies = [
  "cfg-if",
  "crc32fast",
  "libc",
+ "libz-sys",
  "miniz_oxide",
 ]
 
@@ -109,6 +110,17 @@ version = "0.2.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
 
+[[package]]
+name = "libz-sys"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de5435b8549c16d423ed0c03dbaafe57cf6c3344744f1242520d59c9d8ecec66"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "lzma-sys"
 version = "0.1.17"
@@ -304,22 +316,18 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "walkdir"
 version = "2.3.2"
@@ -393,9 +401,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "93ab48844d61251bb3835145c521d88aa4031d7139e8485990f60ca911fa0815"
 dependencies = [
  "byteorder",
- "bzip2",
  "crc32fast",
  "flate2",
  "thiserror",
- "time",
 ]

Cargo.toml

@@ -15,11 +15,11 @@ description = "A command-line utility for easily compressing and decompressing f
 [dependencies]
 walkdir = "2.3.2"
 strsim  = "0.10.0"
-flate2  = "1.0.22"
+flate2  = { version = "1.0.22", default-features = false, features = ["zlib"] }
 bzip2   = "0.4.3"
 tar     = "0.4.37"
 xz2     = "0.1.6"
-zip     = "0.5.13"
+zip     = { version =  "0.5.13", default-features = false, features = ["deflate-miniz"] }
 
 [dev-dependencies]
 tempfile = "3.2.0"