Fix wrong serde serialize for psb file

Cargo.lock

@@ -216,7 +216,6 @@ dependencies = [
  "encoding",
  "flate2",
  "itertools",
- "serde",
 ]
 
 [[package]]
@@ -381,12 +380,6 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
-[[package]]
-name = "json"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078e285eafdfb6c4b434e0d31e8cfcb5115b651496faca5749b88fafd4f23bfd"
-
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -427,7 +420,6 @@ dependencies = [
  "encoding_rs",
  "flate2",
  "int-enum",
- "json",
  "lazy_static",
  "msg_tool_macro",
  "overf",