chore: we don't actually depend on atomic

dune-project

@@ -41,7 +41,6 @@
    (trace (= :version))
    (mtime (>= 2.0))
    base-unix
-   atomic
    dune)
  (tags
   (trace tracing catapult)))
@@ -54,7 +53,6 @@
    (trace (= :version))
    (mtime (>= 2.0))
    base-unix
-   atomic
    dune)
  (tags
   (trace tracing fuchsia)))

src/fuchsia/write/buf_pool.ml

@@ -1,5 +1,5 @@
 open struct
-  module A = Atomic
+  module A = Trace_core.Internal_.Atomic_
 
   exception Got_buf of Buf.t
 end

src/fuchsia/write/dune

@@ -6,4 +6,4 @@
   (ocamlopt_flags :standard -S
                   ;-dlambda
                   )
-  (libraries trace.core atomic threads))
+  (libraries trace.core threads))

src/tef/dune

@@ -3,4 +3,4 @@
   (name trace_tef)
   (public_name trace-tef)
   (synopsis "Simple and lightweight tracing using TEF/Catapult format, in-process")
-  (libraries trace.core trace.private.util mtime mtime.clock.os atomic unix threads))
+  (libraries trace.core trace.private.util mtime mtime.clock.os unix threads))

trace-fuchsia.opam

@@ -14,7 +14,6 @@ depends: [
   "trace" {= version}
   "mtime" {>= "2.0"}
   "base-unix"
-  "atomic"
   "dune" {>= "2.9"}
   "odoc" {with-doc}
 ]

trace-tef.opam

@@ -14,7 +14,6 @@ depends: [
   "trace" {= version}
   "mtime" {>= "2.0"}
   "base-unix"
-  "atomic"
   "dune" {>= "2.9"}
   "odoc" {with-doc}
 ]