Revert of Fix mips build error 'undefined reference to dlopen' (patchset #1...

Revert of Fix mips build error 'undefined reference to dlopen' (patchset #1 id:1 of https://codereview.chromium.org/1056043002/)

Reason for revert:
Speculative revert. The newest v8 roll might fix the problem.

Original issue's description:
> Fix mips build error 'undefined reference to dlopen'
>
> BUG=473473
> TBR=thakis@chromium.org
>
> Committed: https://crrev.com/89311d3481dc434284972239982a426f8e2154e9
> Cr-Commit-Position: refs/heads/master@{#323734}

TBR=carlosk@chromium.org,thakis@chromium.org,pasko@chromium.org,wangxianzhu@chromium.org
BUG=473473

Review URL: https://codereview.chromium.org/1066363002

Cr-Commit-Position: refs/heads/master@{#324207}

build/common.gypi

@@ -4153,8 +4153,7 @@
                   '-m<(mips_float_abi)-float'
                 ],
                 'ldflags': [
-                  '-Wl,--no-keep-memory',
-                  '-ldl',
+                  '-Wl,--no-keep-memory'
                 ],
                 'cflags_cc': [
                   '-Wno-uninitialized',
@@ -4178,9 +4177,6 @@
                 'cflags_cc': [
                   '-Wno-uninitialized',
                 ],
-                'ldflags': [
-                  '-ldl',
-                ],
               }],
             ],
           }],