[FrameworkBundle] remove dead conditions in Translation Commands

Since $targetPath is directly set just 3 lines above
!isset($targetPath[1]) will *always* evaluate to true.

This check was originally to support legacy paths which was removed in
b6eb1f4979db346ffe9fe7f6a5f335323f0c7175

Author: acran

Command/TranslationDebugCommand.php

@@ -165,7 +165,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
                 $transPaths = [$path.'/translations'];
                 $codePaths = [$path.'/templates'];
 
-                if (!is_dir($transPaths[0]) && !isset($transPaths[1])) {
+                if (!is_dir($transPaths[0])) {
                     throw new InvalidArgumentException(sprintf('"%s" is neither an enabled bundle nor a directory.', $transPaths[0]));
                 }
             }

Command/TranslationUpdateCommand.php

@@ -197,7 +197,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
                 $transPaths = [$path.'/translations'];
                 $codePaths = [$path.'/templates'];
 
-                if (!is_dir($transPaths[0]) && !isset($transPaths[1])) {
+                if (!is_dir($transPaths[0])) {
                     throw new InvalidArgumentException(sprintf('"%s" is neither an enabled bundle nor a directory.', $transPaths[0]));
                 }
             }