Remove __INTRODUCED_IN_FUTURE.

This hasn't been particularly useful, we haven't used it consistently,
and it has caused trouble.

Test: builds
Change-Id: Ic5b5b5124af98aa8301e602fd75b0eb72a5fc7f6
diff --git a/tools/versioner/src/Arch.h b/tools/versioner/src/Arch.h
index bac9ec4..16fa265 100644
--- a/tools/versioner/src/Arch.h
+++ b/tools/versioner/src/Arch.h
@@ -138,7 +138,7 @@
   { Arch::x86_64, "x86_64-linux-android" },
 };
 
-static const std::set<int> default_levels = { 14, 15, 16, 17, 18, 19, 21, 23, 24, 25, 26, 27, 28 };
+static const std::set<int> default_levels = { 14, 15, 16, 17, 18, 19, 21, 23, 24, 25, 26, 27, 28, 29 };
 
 static const ArchMap<int> arch_min_api = {
   { Arch::arm, 9 },
@@ -149,8 +149,6 @@
   { Arch::x86_64, 21 },
 };
 
-static constexpr int future_api = 10000;
-
 static const std::unordered_map<std::string, int> api_codename_map{
   {"G", 9},
   {"I", 14},
@@ -166,5 +164,5 @@
   {"O", 26},
   {"O-MR1", 27},
   {"P", 28},
-  {"Q", 9001},
+  {"Q", 29},
 };