ignore: remove no longer relevant gitignore files

These were relevant for the autoconf build but now we're meson only.

Signed-off-by: Ran Benita <ran@unusedvar.com>

bench/.gitignore

@@ -1,4 +0,0 @@
-key-proc
-rules
-rulescomp
-compose

doc/.gitignore

@@ -1,2 +0,0 @@
-Doxyfile
-html/

fuzz/.gitignore

@@ -1 +0,0 @@
-findings/

src/xkbcomp/.gitignore

@@ -1,2 +0,0 @@
-parser.c
-parser.h

test/.gitignore

@@ -1,24 +0,0 @@
-*.log
-*.trs
-filecomp
-rulescomp
-keymap
-keysym
-state
-context
-rules-file
-stringcomp
-buffercomp
-keyseq
-log
-interactive-evdev
-rmlvo-to-kccgst
-rmlvo-to-keymap
-print-compiled-keymap
-atom
-x11
-interactive-x11
-interactive-wayland
-utf8
-x11comp
-compose