Remove folly::futures targets

Summary: Remove unused BUCK targets.

Reviewed By: fkgozali

Differential Revision: D14416459

fbshipit-source-id: f9ee07c6e30dc825627cda9bdf8128ada5ef5166

Author: JoshuaGross

ReactCommon/fabric/components/image/BUCK

@@ -45,7 +45,6 @@ rn_xplat_cxx_library(
     visibility = ["PUBLIC"],
     deps = [
         "fbsource//xplat/fbsystrace:fbsystrace",
-        "fbsource//xplat/folly:futures",
         "fbsource//xplat/folly:headers_only",
         "fbsource//xplat/folly:memory",
         "fbsource//xplat/folly:molly",

ReactCommon/fabric/imagemanager/BUCK

@@ -91,7 +91,6 @@ rn_xplat_cxx_library(
     visibility = ["PUBLIC"],
     deps = [
         "fbsource//xplat/fbsystrace:fbsystrace",
-        "fbsource//xplat/folly:futures",
         "fbsource//xplat/folly:headers_only",
         "fbsource//xplat/folly:memory",
         "fbsource//xplat/folly:molly",