build: do not install git-remote-testpy

It's only meant for testing.
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Makefile

@@ -487,6 +487,8 @@ SCRIPT_PERL += git-svn.perl
 SCRIPT_PYTHON += git-remote-testpy.py
 SCRIPT_PYTHON += git-p4.py
 
+NO_INSTALL += git-remote-testpy
+
 # Generated files for scripts
 SCRIPT_SH_GEN = $(patsubst %.sh,%,$(SCRIPT_SH))
 SCRIPT_PERL_GEN = $(patsubst %.perl,%,$(SCRIPT_PERL))