Remove measurement of layout query wait time (#33210)

Now that the script thread and the layout thread are the same the wait
time effectively zero, so there's no need to measure it. This also
removes one dependency and removes one use of legacy time.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

Cargo.lock

@@ -2851,12 +2851,6 @@ dependencies = [
  "log",
 ]
 
-[[package]]
-name = "histogram"
-version = "0.6.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12cb882ccb290b8646e554b157ab0b71e64e8d5bef775cd66b6531e52d302669"
-
 [[package]]
 name = "home"
 version = "0.5.9"
@@ -3766,7 +3760,6 @@ dependencies = [
  "fonts",
  "fonts_traits",
  "fxhash",
- "histogram",
  "ipc-channel",
  "layout_2013",
  "log",
@@ -3787,7 +3780,6 @@ dependencies = [
  "servo_url",
  "style",
  "style_traits",
- "time 0.1.45",
  "url",
  "webrender_api",
  "webrender_traits",