Remove --install-dir processing

lib/main.js

@@ -128,20 +128,17 @@ function run() {
             var version;
             var branch;
             var tool_args;
-            var tool_dir;
             if (process.argv[2]) { // e.g., node lib/script.js <json object>
                 const inputs = JSON.parse(process.argv[2]);
                 version = inputs.version;
                 branch = inputs.branch;
                 tool_args = inputs.toolchain;
-                tool_dir = inputs.toolchain_dir;
             }
             else {
                 // Old way in case this is fixed by GH
                 version = core.getInput('version');
                 branch = core.getInput('branch');
                 tool_args = core.getInput('toolchain');
-                tool_dir = core.getInput('toolchain_dir');
             }
             // Install the requested version/branch unless cached
             const cached = detect_cached();
@@ -157,15 +154,10 @@ function run() {
             core.addPath(path_1.default.join(process.cwd(), install_dir, 'bin'));
             // And configure the toolchain
             if (tool_args.length > 0 && !cached) {
-                if (tool_dir.length == 0) {
-                    yield exec.exec(`alr -n toolchain ${tool_args != "--disable-assistant" ? "--select " : ""} ${tool_args}`);
-                    // Disable the assistant anyway if we have selected something. This will no longer be necessary after 1.1.1
-                    if (tool_args != "--disable-assistant") {
-                        yield exec.exec(`alr -n toolchain --disable-assistant`);
-                    }
-                }
-                else {
-                    yield exec.exec(`alr -n toolchain --install ${tool_args} --install-dir ${tool_dir}`);
+                yield exec.exec(`alr -n toolchain ${tool_args != "--disable-assistant" ? "--select " : ""} ${tool_args}`);
+                // Disable the assistant anyway if we have selected something. This will no longer be necessary after 1.1.1
+                if (tool_args != "--disable-assistant") {
+                    yield exec.exec(`alr -n toolchain --disable-assistant`);
                 }
             }
             // Show the alr now in the environment and the configured toolchain