Just call the C lib 'the library' everywhere, don't call it a 'runtime'

script/build-runtime

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-
-# If `CC` isn't set, pick a default compiler
-if hash clang 2>/dev/null; then
-  : ${CC:=clang}
-else
-  : ${CC:=gcc}
-fi
-
-${CC}                   \
-  -c                    \
-  -O3                   \
-  -std=c99              \
-  -I lib/src            \
-  -I lib/include        \
-  -I lib/utf8proc       \
-  lib/src/runtime.c     \
-  -o tree-sitter.o
-
-ar rcs libtree-sitter.a tree-sitter.o
-rm tree-sitter.o