Revert "tests: added the fake-merge-module and new test case covering the init_worker_by_lua* mutating another module's main_conf bug."

This reverts commit 3fdc418.

A follow-up to reverting a0f73b3 which
contained the code for this test case which now fails since reverted.

See details for the revert at:

    openresty/lua-nginx-module#1627

Author: thibaultcha

t/124-init-worker.t

@@ -699,21 +699,3 @@ This also affects merge_loc_conf
 ok
 --- no_error_log
 [error]
-
-
-
-=== TEST 20: ensure it does not mutate another module's main_conf (github issue #1553)
-https://github.com/openresty/lua-nginx-module/issues/1553
---- stream_config
-    init_worker_by_lua_block {
-        return
-    }
---- stream_server_config
-    content_by_lua_block {
-        ngx.say("fake_var = ", ngx.var.fake_var)
-    }
---- stream_response
-fake_var = 1
---- no_error_log
-[error]
-[alert]

t/data/fake-merge-module/config

@@ -10,8 +10,6 @@ version=$1
 force=$2
 home=~
 
-add_fake_merge_module="--add-module=$root/t/data/fake-merge-module"
-
             #--add-module=$root/../stream-echo-nginx-module \
 ngx-build $force $version \
             --with-cc-opt="-DNGX_LUA_USE_ASSERT -I$PCRE_INC -I$OPENSSL_INC" \
@@ -35,7 +33,6 @@ ngx-build $force $version \
             --add-module=$root/../echo-nginx-module \
             --add-module=$root/../memc-nginx-module \
             --add-module=$root/../headers-more-nginx-module \
-            $add_fake_merge_module \
             --add-module=$root $opts \
             --with-poll_module \
             --without-http_ssi_module \