Delete useless --preload option

This was a holdover from `tl` that's been replaced with `global-env-def`

closes #62

Author: euclidianAce

build/cyan/cli.lua

@@ -12,7 +12,6 @@ This file describes the layout of your project by returning a table with the fol
 | `gen_target`       | `--gen-target`       | `tl.TargetMode`     | Minimum Lua version for generated code. One of `5.1` or `5.3` |
 | `include_dir`      | `-I` `--include-dir` | `{string}`          | Add each path provided to `package.path` and `package.cpath` |
 | `include`          |                      | `{string}`          | A list of [patterns](#Patterns) describing what files to include |
-| `preload_modules`  | `-l` `--preload`     | `{string}`          | Execute the equivalent of `require(<module>)` for each provided name |
 | `global_env_def`   | `--global-env-def`   | `string`            | Load this file before type checking |
 | `scripts`          |                      | <code>{string : {string : string &#124; {string}}}</code> | A map of commands and hooks to filenames, see [scripts](#Scripts) |
 |                    | `--no-script`        |                     | Disables scripts, see [scripts](#Scripts) |

docs/tlconfig.md

@@ -22,10 +22,6 @@ local keys <const>, from <const>, sort <const>, ivalues <const>
 local parser <const> = argparse("cyan", "The Teal build system", nil)
 parser:add_help(false)
 
-parser:option("-l --preload", "Execute the equivalent of require('modulename') before processing Teal files.", nil, nil, nil, nil)
-      :argname("<modulename>")
-      :count("*")
-
 parser:option("--global-env-def", "Load <module-name> before typechecking. Use this to define types provided by your environment.", nil, nil, nil, nil)
       :argname("<module-name>")
       :count("?")