meson: remove unneeded install: flags

Summary:
when install is not set, meson take the value of install_dir. So when
this is removed, things will continue working correctly.

Reviewers: zmike, stefan_schmidt, cedric, segfaultxavi

Reviewed By: zmike

Subscribers: #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9065

meson.build

@@ -503,7 +503,6 @@ efl_config_h.set('EFL_API_LEGACY_DEF', '#define EFL_API_LEGACY_DEF "FIXME NOT IM
 
 configure_file(
   output: 'config.h',
-  install: false,
   configuration: config_h
 )
 

src/lib/eina/meson.build

@@ -346,7 +346,6 @@ endif
 eina_config_file = configure_file(
   output: 'eina_config.h',
   configuration: eina_config,
-  install: true,
   install_dir: dir_package_include)
 
 public_headers += eina_config_file

src/lib/elementary/meson.build

@@ -996,7 +996,6 @@ endif
 
 c = configure_file(
   output: 'Elementary_Options.h',
-  install : true,
   install_dir : dir_package_include,
   configuration: elm_options)