[ox/std] Remove oxRequireT and oxRequireMT

(synced from ab5bc1adb6)

ox-docs.md

@@ -176,14 +176,8 @@ ox::Result<int> f2() noexcept {
 ```
 ```oxRequire``` is not quite as versatile, but it should still cleanup a lot of otherwise less ideal code.
 
-```oxRequire``` also has variants for throwing the error and for making to value non-const:
-
-* ```oxRequireM``` - oxRequire Mutable
-* ```oxRequireT``` - oxRequire Throw
-* ```oxRequireMT``` - oxRequire Mutable Throw
-
-The throw variants of ```oxRequire``` are generally legacy code.
-```ox::Result::unwrapThrow``` is generally preferred now.
+```oxRequire``` by default creates a const, but there is also an ```oxRequireM``` (oxRequire Mutable)
+variant for creating a non-const value.
 
 ### Logging and Output