Remove JSBackend from config.toml

JSBackend is implied when building the emscripten backend, and not available for the standard llvm backend.  This commit also puts the example config in sync with the defaults in src/bootstrap/native.rs

diff --git a/config.toml.example b/config.toml.example
index 8f6bf03489f06eb7ee36bee4b2445d3bde04f202..0631d7c83eaf7fbf963296bfb95e8645ef125ba9 100644 (file)
--- a/config.toml.example
+++ b/config.toml.example
@@ -61,7 +61,7 @@
 # support. You'll need to write a target specification at least, and most
 # likely, teach rustc about the C ABI of the target. Get in touch with the
 # Rust team and file an issue if you need assistance in porting!
-#targets = "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX;Hexagon"
+#targets = "X86;ARM;AArch64;Mips;PowerPC;SystemZ;MSP430;Sparc;NVPTX;Hexagon"
 
 # LLVM experimental targets to build support for. These targets are specified in
 # the same format as above, but since these targets are experimental, they are