config.toml.example: thinlto bootstrap was removed in ff227c4 so remove the option.

Author: matthiaskrgr

config.toml.example

@@ -239,11 +239,6 @@
 # compiler.
 #codegen-units = 1
 
-# Whether to enable ThinLTO (and increase the codegen units to either a default
-# or the configured value). On by default. If we want the fastest possible
-# compiler, we should disable this.
-#thinlto = true
-
 # Whether or not debug assertions are enabled for the compiler and standard
 # library. Also enables compilation of debug! and trace! logging macros.
 #debug-assertions = false