Remove rpath in installed binaries.

Fix #250

src/manager/meson.build

@@ -1,4 +1,3 @@
 executable('kiwix-manage', ['kiwix-manage.cpp'],
   dependencies:all_deps,
-  install:true,
-  install_rpath: join_paths(get_option('prefix'), get_option('libdir')))
+  install:true)

src/reader/meson.build

@@ -1,4 +1,3 @@
 executable('kiwix-read', ['kiwix-read.cpp'],
   dependencies:all_deps,
-  install:true,
-  install_rpath: join_paths(get_option('prefix'), get_option('libdir')))
+  install:true)

src/searcher/meson.build

@@ -1,4 +1,3 @@
 executable('kiwix-search', ['kiwix-search.cpp'],
   dependencies:all_deps,
-  install:true,
-  install_rpath: join_paths(get_option('prefix'), get_option('libdir')))
+  install:true)

src/server/meson.build

@@ -4,5 +4,4 @@ sources += server_resources
 
 executable('kiwix-serve', sources,
   dependencies:all_deps,
-  install:true,
-  install_rpath: join_paths(get_option('prefix'), get_option('libdir')))
+  install:true)