Remove liballoc compiler-builtins f16/f128 disable patch

We already build with the compiler-builtins-no-f16-f128 feature enabled.

Author: bjorn3

patches/0029-stdlib-Disable-f16-and-f128-in-compiler-builtins.patch

@@ -43,6 +43,7 @@ verbose-tests = false
 # disabled bootstrap will crash trying to copy llvm tools for the bootstrap
 # compiler.
 llvm-tools = false
+std-features = ["panic-unwind", "compiler-builtins-no-f16-f128"]
 
 EOF
 popd