Remove unused files

hplip-3.21.2.tar.gz.asc

@@ -1,7 +0,0 @@
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-
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hplip-lineart.patch

@@ -1,14 +0,0 @@
-diff -up hplip-3.14.6/scan.py.lineart hplip-3.14.6/scan.py
---- hplip-3.14.6/scan.py.lineart	2014-07-23 12:30:52.361517852 +0100
-+++ hplip-3.14.6/scan.py	2014-07-23 12:32:17.052940000 +0100
-@@ -977,8 +977,8 @@ try:
-                         try:
-                             pixels_per_line = bytes_per_line * 8          # Calculation of pixels_per_line for Lineart must be 8 time of bytes_per_line
-                                                                           # Otherwise, scanned image will be corrupted (slanted)
--                            im = Image.frombuffer('RGBA', (pixels_per_line, lines), buffer.read(),
--                                'raw', 'RGBA', 0, 1).convert('L')
-+                            im = Image.frombuffer('1', (pixels_per_line, lines), buffer.read(),
-+                                'raw', '1', 0, 1).convert('L')
-                         except ValueError:
-                             log.error("Did not read enough data from scanner (I/O Error?)")
-                             sys.exit(1)

upstream-key.gpg

@@ -1,30 +0,0 @@
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