Remove superfluous <map> includes from //components headers

Remove unnecessary includes. Then do IWYU to fix the build. Removal
automated with:

git ls-files components | grep '\.h$' | xargs grep -l '<map>$' | \
  xargs grep -L std::map | xargs grep -L std::multimap | \
  xargs tools/add_header.py --remove --header '<map>'

Bug: 40318405
Change-Id: I57a66308625c319056c023282c91ee24fcd06794
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7234717
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Owners-Override: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1555857}
NOKEYCHECK=True
GitOrigin-RevId: 3a4f9141339792d856a791f88d44693e7cb4b6c9
diff --git a/content/subprocess_metrics_provider.h b/content/subprocess_metrics_provider.h
index c4d4c3a..4abe7bb 100644
--- a/content/subprocess_metrics_provider.h
+++ b/content/subprocess_metrics_provider.h
@@ -5,7 +5,6 @@
 #ifndef COMPONENTS_METRICS_CONTENT_SUBPROCESS_METRICS_PROVIDER_H_
 #define COMPONENTS_METRICS_CONTENT_SUBPROCESS_METRICS_PROVIDER_H_
 
-#include <map>
 #include <memory>
 
 #include "base/containers/variant_map.h"
diff --git a/metrics_service.h b/metrics_service.h
index f1eb3ad..7a74668 100644
--- a/metrics_service.h
+++ b/metrics_service.h
@@ -10,7 +10,6 @@
 
 #include <stdint.h>
 
-#include <map>
 #include <memory>
 #include <optional>
 #include <string>