build: fix syntax error within codeowners file (#15014)
build: fix syntax error within codeowners file (#15014)

Since https://github.com/angular/material2/commit/88601fa51d581f538468a9b63890b0e285e519cb landed, it seems that the Github codeowner's are no longer working. This is because globs with such negations are not supported within the `CODEOWNERS` file

The exclusion of `.d.ts` files shouldn't be necessary anyway since the last match in the `CODEOWNERS` file takes precedence over previous matches.
DevVersion/material2,josephperrott/material2,mmalerba/material2,andrewseguin/material2,angular/components,jelbourn/material2,mmalerba/material2,mmalerba/material2,Jefiozie/material2,josephperrott/material2,DevVersion/material2,angular/components,DevVersion/material2,andrewseguin/material2,Jefiozie/material2,jelbourn/material2,DevVersion/material2,crisbeto/material2,angular/components,DevVersion/material2,crisbeto/material2,andrewseguin/material2,mmalerba/material2,angular/components,jelbourn/material2,Jefiozie/material2,josephperrott/material2,josephperrott/material2,crisbeto/material2,crisbeto/material2,jelbourn/material2,josephperrott/material2,andrewseguin/material2,Jefiozie/material2,mmalerba/material2,jelbourn/material2,Jefiozie/material2,andrewseguin/material2