Remove code for checking the local timezone

Cargo.toml

@@ -34,14 +34,12 @@ base64 = "0.13.0"
 bigdecimal = "0.4"
 bip32 = "0.4.0"
 chrono = "0.4"
-chrono-tz = "0.9"
 clap = { version = "3.1.18", features = ["derive", "cargo"] }
 crc32fast = "1.3.2"
 data-encoding = "2.3.3"
 flate2 = "1.0.22"
 hex = { version = "0.4.2", features = ["serde"] }
 hidapi = { version = "1.4", default-features = false, optional = true }
-iana-time-zone = "0.1"
 indicatif = "0.17"
 itertools = "0.10.5"
 k256 = { version = "0.11.4", features = ["pem"] }

src/lib/format/mod.rs

@@ -1,5 +1,4 @@
 use chrono::{DateTime, TimeZone, Utc};
-use chrono_tz::{OffsetName, Tz};
 use itertools::Itertools;
 
 pub mod ckbtc;
@@ -10,18 +9,7 @@ pub mod nns_governance;
 pub mod registry;
 
 pub fn format_datetime(datetime: DateTime<Utc>) -> String {
-    let fmt = "%b %d %Y %X";
-    if let Ok(tz) = iana_time_zone::get_timezone() {
-        let tz = tz.parse::<Tz>().unwrap();
-        format!(
-            "{} {}",
-            datetime.with_timezone(&tz).format(fmt),
-            tz.offset_from_utc_datetime(&datetime.naive_utc())
-                .abbreviation()
-        )
-    } else {
-        format!("{} UTC", datetime.format(fmt))
-    }
+    format!("{} UTC", datetime.format("%b %d %Y %X"))
 }
 
 pub fn format_timestamp_seconds(seconds: u64) -> String {