fix(tmux_cmd): simpler trim lines in stdout

Author: rockandska

Diff for: libtmux/common.py

@@ -271,9 +271,9 @@ def __init__(self, *args: t.Any, **kwargs: t.Any) -> None:
         stdout_str = console_to_str(stdout)
         stdout_split = stdout_str.split("\n")
         # remove trailing newlines from stdout
-        for i in range(len(stdout_split)-1, -1, -1):
-            if stdout_split[i] == '':
-                stdout_split.pop(i)
+        for v in reversed(stdout_split):
+            if v == '':
+                stdout_split.pop()
             else:
                 break