fbthrift: remove unneeded dependencies

These don't seem to be needed at run-time.

Author: carlocab

Formula/f/fbthrift.rb

@@ -17,14 +17,13 @@ class Fbthrift < Formula
 
   depends_on "bison" => :build # Needs Bison 3.1+
   depends_on "cmake" => [:build, :test]
-  depends_on "boost"
+  depends_on "mvfst" => [:build, :test]
   depends_on "double-conversion"
   depends_on "fizz"
   depends_on "fmt"
   depends_on "folly"
   depends_on "gflags"
   depends_on "glog"
-  depends_on "mvfst"
   depends_on "openssl@3"
   depends_on "wangle"
   depends_on "xxhash"
@@ -38,6 +37,10 @@ class Fbthrift < Formula
     depends_on "llvm" if DevelopmentTools.clang_build_version <= 1100
   end
 
+  on_linux do
+    depends_on "boost"
+  end
+
   fails_with :clang do
     build 1100
     cause <<~EOS