Merge pull request #19 from OpenVicProject/revert/5abbb9c

Revert "Merge pull request #17 from OpenVicProject/fix-missing-lto"

Author: Spartan322

build/common_compiler_flags.py

@@ -23,11 +23,7 @@ def exists(env):
 
 
 def generate(env):
-    if "lto" in env:
-        assert env["lto"] in ["thin", "full", "none"], "Unrecognized lto: {}".format(env["lto"])
-    else:
-        env["lto"] = "none"
-
+    assert env["lto"] in ["thin", "full", "none"], "Unrecognized lto: {}".format(env["lto"])
     if env["lto"] != "none":
         print("Using LTO: " + env["lto"])