Remove core.readlines_stdin() and core.readlines_stdin_raw()

Turns out, they're useless when you can simply iterate over `sys.stdin`
and `sys.stdin.buffer`.

Author: Expertcoderz

userland/core/io.py

@@ -10,21 +10,11 @@ def perror(*errors: Any) -> None:
     )
 
 
-def readlines_stdin() -> Generator[str]:
-    while line := sys.stdin.readline():
-        yield line
-
-
-def readlines_stdin_raw() -> Generator[bytes]:
-    while line := sys.stdin.buffer.readline():
-        yield line
-
-
 def readwords_stdin() -> Generator[str]:
-    for line in readlines_stdin():
+    for line in sys.stdin:
         yield from line.split()
 
 
 def readwords_stdin_raw() -> Generator[bytes]:
-    for line in readlines_stdin_raw():
+    for line in sys.stdin.buffer:
         yield from line.split()

userland/utilities/cat.py

@@ -151,7 +151,7 @@ def python_userland_cat(opts, args: list[str]) -> int:
 
     for name in args or ["-"]:
         if name == "-":
-            streams.append(core.readlines_stdin_raw())
+            streams.append(sys.stdin.buffer)
         else:
             try:
                 # pylint: disable=consider-using-with