Update python version to python2

Author: dietzc

org.knime.knip.knimepython.feature/feature.xml

@@ -728,7 +728,7 @@ propagated with or for interoperation with KNIME.
    </license>
 
    <requires>
-      <import feature="org.knime.features.python" version="3.2.0" match="greaterOrEqual"/>
+      <import feature="org.knime.features.python2" version="3.5.0" match="greaterOrEqual"/>
    </requires>
 
    <plugin

org.knime.knip.knimepython/META-INF/MANIFEST.MF

@@ -19,8 +19,7 @@ Require-Bundle: org.knime.base;bundle-version="2.11.0",
  scijava-common;bundle-version="2.37.0",
  imagej-common;bundle-version="0.12.1",
  scifio-bf-compat;bundle-version="1.11.0",
- org.knime.python.typeextensions;bundle-version="3.4.0",
- org.knime.python2;bundle-version="3.4.0"
+ org.knime.python.typeextensions;bundle-version="3.4.0"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Bundle-ClassPath: .
 Export-Package: org.knime.knip.knimepython