Remove @author tags (#5601)

Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning.

Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.

generators/python/colour.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for colour blocks.
- * @author fraser@google.com (Neil Fraser)
  */
 'use strict';
 

generators/python/lists.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for list blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/logic.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for logic blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/loops.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for loop blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/math.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for math blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/procedures.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for procedure blocks.
- * @author fraser@google.com (Neil Fraser)
  */
 'use strict';
 

generators/python/text.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for text blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/variables.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for variable blocks.
- * @author q.neutron@gmail.com (Quynh Neutron)
  */
 'use strict';
 

generators/python/variables_dynamic.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Generating Python for dynamic variable blocks.
- * @author fenichel@google.com (Rachel Fenichel)
  */
 'use strict';