Remove 'strip' option from cargo_toml.txt

Remove the 'strip' option from the Cargo.toml template.

Author: pgherveou

crates/cargo-pvm-contract/templates/scaffold/cargo_toml.txt

@@ -31,5 +31,4 @@ codegen-units = 1
 lto = true
 opt-level = "z"
 panic = "abort"
-strip = true
 overflow-checks = false