config: set a default filter for text/plain

Avoid the following issue when running aerc with the default
configuration:

  No filter configured for this mimetype ('text/plain')

Use a very basic sed command to replace the default plaintext filter.

Fixes: bb0f1801402e ("config: do not hardcode sharedir")
Signed-off-by: Robin Jarry <robin@jarry.cc>

1 files changed, 0 insertions, 16 deletions

diff --git a/filters/plaintext b/filters/plaintext
deleted file mode 100755
index cfaa170e..00000000
--- a/filters/plaintext
+++ /dev/null
@@ -1,16 +0,0 @@
-# vim: set ft=awk :
-BEGIN {
-	dim = "\x1B[2m"
-	cyan = "\x1B[36m"
-	reset = "\x1B[0m"
-}
-{
-	# Strip carriage returns from line
-	gsub(/\r/, "", $0)
-
-	if ($0 ~ /^On .*, .* wrote:/ || $0 ~ /^>+/) {
-		print dim cyan $0 reset
-	} else {
-		print $0
-	}
-}