remove no usage dependencies

Cargo.toml

@@ -9,6 +9,7 @@ members = [
     "mems/examples/ds-static-topo",
     "mems/examples/ds-dev-ohm-cal",
     "mems/examples/ds-dyn-topo",
+    "mems/examples/ds-pf-input",
     "mems/examples/ds-3phase-pf",
 ]
 

mems/examples/ds-3phase-pf/Cargo.toml

@@ -11,7 +11,6 @@ log = "0.4"
 serde_json = "1.0"
 serde_cbor = "0.11"
 arrow-schema = { version = "52.1", features = ["serde"] }
-petgraph = "0.6"
 csv = "1.3.0"
 num-complex = "0.4"
 ndarray = "0.15"

mems/examples/ds-dyn-topo/Cargo.toml

@@ -10,7 +10,6 @@ crate-type = ["cdylib"]
 log = "0.4"
 serde_cbor = "0.11"
 arrow-schema = { version = "52.1", features = ["serde"] }
-petgraph = "0.6"
 eig-domain = { path = "../../../eig-domain" }
 mems = { path = "../../../mems" }
 csv = "1.3.0"
\ No newline at end of file