refactor(journaldriver): Use time crate directly instead of chrono

With this change, we still depend on chrono (through medallion), but
but I'm going to try and fix that upstream as well.

Change-Id: Iefd3d8578ea8870961107f3222dea7f936c2dd9a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5311
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>

ops/journaldriver/Cargo.lock

@@ -94,8 +94,7 @@ dependencies = [
  "libc",
  "num-integer",
  "num-traits",
- "serde",
- "time",
+ "time 0.1.44",
  "winapi",
 ]
 
@@ -112,7 +111,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "80f6044740a4a516b8aac14c140cdf35c1a640b1bd6b98b6224e49143b2f1566"
 dependencies = [
  "percent-encoding 2.1.0",
- "time",
+ "time 0.1.44",
 ]
 
 [[package]]
@@ -227,7 +226,6 @@ name = "journaldriver"
 version = "1.1.0"
 dependencies = [
  "anyhow",
- "chrono",
  "env_logger",
  "lazy_static",
  "log",
@@ -237,6 +235,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "systemd",
+ "time 0.3.7",
  "ureq",
 ]
 
@@ -343,6 +342,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97ba99ba6393e2c3734791401b66902d981cb03bf190af674ca69949b6d5fb15"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.9.0"
@@ -596,6 +604,25 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "004cbc98f30fa233c61a38bc77e96a9106e65c88f2d3bef182ae952027e5753d"
+dependencies = [
+ "itoa",
+ "libc",
+ "num_threads",
+ "serde",
+ "time-macros",
+]
+
+[[package]]
+name = "time-macros"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25eb0ca3468fc0acc11828786797f6ef9aa1555e4a211a60d64cc8e4d1be47d6"
+
 [[package]]
 name = "tinyvec"
 version = "1.5.1"