Get rid of redundant \Exception catch blocks

src/Composer/Downloader/ZipDownloader.php

@@ -160,8 +160,6 @@ class ZipDownloader extends ArchiveDownloader
                     return $tryFallback(new \RuntimeException('Failed to extract '.$package->getName().': ('.$process->getExitCode().') '.$command."\n\n".$output));
                 }
             });
-        } catch (\Exception $e) {
-            return $tryFallback($e);
         } catch (\Throwable $e) {
             return $tryFallback($e);
         }
@@ -195,8 +193,6 @@ class ZipDownloader extends ArchiveDownloader
             }
         } catch (\ErrorException $e) {
             $processError = new \RuntimeException('The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems): '.$e->getMessage(), 0, $e);
-        } catch (\Exception $e) {
-            $processError = $e;
         } catch (\Throwable $e) {
             $processError = $e;
         }

src/Composer/Util/ProcessExecutor.php

@@ -255,10 +255,6 @@ class ProcessExecutor
             } else {
                 $process = new Process($command, $cwd, null, null, static::getTimeout());
             }
-        } catch (\Exception $e) {
-            call_user_func($job['reject'], $e);
-
-            return;
         } catch (\Throwable $e) {
             call_user_func($job['reject'], $e);
 
@@ -269,10 +265,6 @@ class ProcessExecutor
 
         try {
             $process->start();
-        } catch (\Exception $e) {
-            call_user_func($job['reject'], $e);
-
-            return;
         } catch (\Throwable $e) {
             call_user_func($job['reject'], $e);
 

src/Composer/Util/RemoteFilesystem.php

@@ -573,7 +573,6 @@ class RemoteFilesystem
                 // passing `null` to file_get_contents will convert `null` to `0` and return 0 bytes
                 $result = file_get_contents($fileUrl, false, $context);
             }
-        } catch (\Exception $e) {
         } catch (\Throwable $e) {
         }