do not statically link libjq since we install it

--- a/Makefile.am
+++ b/Makefile.am
@@ -53,7 +53,6 @@
 
 bin_PROGRAMS = jq
 jq_SOURCES = main.c
-jq_LDFLAGS = -static-libtool-libs
 jq_LDADD = libjq.la -lm
 
 ### Tests (make check)