Revert of Add force_dynamic_crt to build as static library but with /MD on...

Revert of Add force_dynamic_crt to build as static library but with /MD on windows (patchset #3 id:40001 of https://codereview.chromium.org/2149963002/ )

Reason for revert:
Fails gyp build with chromium:
https://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/builds/37051

Blocks roll:
https://codereview.chromium.org/2157903002/

Please add the trybot ios-simulator on reland.

Original issue's description:
> [build] Add force_dynamic_crt option to build a static library with /MD on windows
>
> Adds option to build a V8 library statically, but with the options on
> windows that allows it to be subsequently included in another DLL. On
> Windows this is required for it to correclty link against the correct
> C++ runtime. Require for our Node.js shared library build.
>
> Reference:  https://github.com/nodejs/node/pull/7487
>
> BUG=
> R=machenbach@chromium.org, michael_dawson@ca.ibm.com
>
> Committed: https://crrev.com/9cf88c1c364cf76c1e745aa63196768435e8ef5d
> Cr-Commit-Position: refs/heads/master@{#37814}

TBR=michael_dawson@ca.ibm.com,franzih@chromium.org,sxa@uk.ibm.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2155073002
Cr-Commit-Position: refs/heads/master@{#37822}

gypfiles/standalone.gypi

@@ -33,7 +33,6 @@
   'includes': ['toolchain.gypi'],
   'variables': {
     'component%': 'static_library',
-    'force_dynamic_crt%': 0,
     'clang_xcode%': 0,
     # Track where uninitialized memory originates from. From fastest to
     # slowest: 0 - no tracking, 1 - track only the initial allocation site, 2

gypfiles/toolchain.gypi

@@ -1110,7 +1110,7 @@
           'VCCLCompilerTool': {
             'Optimization': '0',
             'conditions': [
-              ['component=="shared_library" or force_dynamic_crt==1', {
+              ['component=="shared_library"', {
                 'RuntimeLibrary': '3',  # /MDd
               }, {
                 'RuntimeLibrary': '1',  # /MTd
@@ -1162,7 +1162,7 @@
             'StringPooling': 'true',
             'BasicRuntimeChecks': '0',
             'conditions': [
-              ['component=="shared_library" or force_dynamic_crt==1', {
+              ['component=="shared_library"', {
                 'RuntimeLibrary': '3',  #/MDd
               }, {
                 'RuntimeLibrary': '1',  #/MTd
@@ -1353,7 +1353,7 @@
                 'FavorSizeOrSpeed': '0',
                 'StringPooling': 'true',
                 'conditions': [
-                  ['component=="shared_library" or force_dynamic_crt==1', {
+                  ['component=="shared_library"', {
                     'RuntimeLibrary': '2',  #/MD
                   }, {
                     'RuntimeLibrary': '0',  #/MT