Those files should not be installed. Installing those files and removing
them in rpm spec file makes spec file less clear and readable than it can
be.

--- a/Makefile.am~	2021-02-23 03:14:29.000000000 +0000
+++ b/Makefile.am	2021-02-24 00:46:10.123661073 +0000
@@ -10,11 +10,10 @@
 SUBDIRS += extras
 endif
 
-dist_doc_DATA = LICENSE \
-                ChangeLog \
-		README.md
-
-dist_noinst_DATA = CodingStyle
+dist_noinst_DATA = LICENSE \
+		ChangeLog \
+		README.md \
+		CodingStyle
 
 EXTRA_DIST = extras/lttng-bash_completion \
 	     LICENSES/BSD-2-Clause \
--- a/doc/Makefile.am~	2021-02-23 03:14:29.000000000 +0000
+++ b/doc/Makefile.am	2021-02-24 00:58:44.385192919 +0000
@@ -6,6 +6,6 @@
 	live-reading-howto.txt live-reading-protocol.txt \
 	relayd-architecture.txt
 
-dist_doc_DATA = quickstart.txt streaming-howto.txt python-howto.txt \
+dist_noinst_DATA = quickstart.txt streaming-howto.txt python-howto.txt \
 	snapshot-howto.txt live-reading-howto.txt \
 	live-reading-protocol.txt valgrind-howto.txt