diff --git a/nalgebra-sparse/Cargo.toml b/nalgebra-sparse/Cargo.toml
index 781d1696..bb4fdb8e 100644
--- a/nalgebra-sparse/Cargo.toml
+++ b/nalgebra-sparse/Cargo.toml
@@ -24,7 +24,6 @@ io      = [ "pest", "pest_derive" ]
 slow-tests = []
 
 [dependencies]
-criterion = { version = "0.3", features = ["html_reports"] }
 nalgebra = { version="0.30", path = "../" }
 num-traits = { version = "0.2", default-features = false }
 proptest = { version = "1.0", optional = true }
@@ -32,25 +31,12 @@ matrixcompare-core = { version = "0.1.0", optional = true }
 pest           = { version = "2", optional = true }
 pest_derive    = { version = "2", optional = true }
 serde = { version = "1.0", default-features = false, features = [ "derive" ], optional = true }
-itertools = "0.10"
 
 [dev-dependencies]
-itertools = "0.10"
 matrixcompare = { version = "0.3.0", features = [ "proptest-support" ] }
 nalgebra = { version="0.30", path = "../", features = ["compare"] }
 serde_json = "1.0"
 
-[[example]]
-name = "spmm"
-required-features = ["io"]
-path = "example/spmm.rs"
-
 [package.metadata.docs.rs]
 # Enable certain features when building docs for docs.rs
 features = [ "proptest-support", "compare" ]
-
-[profile.release]
-opt-level = 3 
-lto = "fat"
-codegen-units = 1
-panic = "abort"
diff --git a/nalgebra-sparse/example/spmm.rs b/nalgebra-sparse/example/spmm.rs
deleted file mode 100644
index 2be64735..00000000
--- a/nalgebra-sparse/example/spmm.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-extern crate nalgebra_sparse;
-use nalgebra_sparse::CsrMatrix;
-use std::fs::{self, DirEntry};
-use std::io;
-use std::path::Path;
-use std::time::{Duration, Instant};
-
-#[cfg(feature = "io")]
-use nalgebra_sparse::io::load_coo_from_matrix_market_file;
-fn main() {
-    #[cfg(feature = "io")]
-    {
-        let mut file_iter = fs::read_dir("data").unwrap();
-        for f in file_iter {
-            println!("Benchmark file {:?}", f);
-            let f = f.unwrap().path();
-
-            if f.extension().map_or(false, |ext| ext == "mtx") {
-                println!("Benchmark file {:?}", f);
-                let sparse_input_matrix = load_coo_from_matrix_market_file::<f64, _>(&f).unwrap();
-                let sparse_input_matrix = CsrMatrix::from(&sparse_input_matrix);
-                let spmm_result = &sparse_input_matrix * &sparse_input_matrix;
-                let now = Instant::now();
-                let spmm_result = &sparse_input_matrix * &sparse_input_matrix;
-                let spmm_time = now.elapsed().as_millis();
-                println!("SGEMM time was {}", spmm_time);
-                let sum: f64 = spmm_result.triplet_iter().map(|(_, _, v)| v).sum();
-                println!("sum of product is {}", sum);
-            }
-        }
-    }
-    #[cfg(not(feature = "io"))]
-    {
-        panic!("Run with IO feature only");
-    }
-}